The people who made Dr. Crafty are quite open about what goes on behind the scenes of their productions, with plenty of scrapped or adjusted concepts made throughout production.
- Nurse Worse's first design
was done by Alex himself. In addition to having shorter hair, an outfit that exposed her breasts, and a pair of massive test tubs that she carried in her hands, she had many smaller details piled up on her upper body. Alex wasn't satisfied with the result, so he took the design to Rin Lockhart, who streamlined Nurse into her final design. This bit of production trivia is given a nod in "Street Frighters." After Crafty gives a speech about the importance of first drafts, Nurse's first design suddenly rises into the frame next to her final counterpart, and an embarrassed Crafty shoves her away. - In production, Pepper's spin-off segment was going to be called Crafty's OC Cook-Off. The premise, which involved fan-submitted characters being harshly criticized by Crafty and Pepper, was scrapped, as it was incongruous with Pepper's character and risked being too insulting to its audience. Thus, Crafty's Chara-Cafe was conceived; there, Crafty and Pepper design OCs based on a list of qualities voted upon by the show's Patreon supporters. The original premise would later be retooled into Crafty's Shake-Up Salon, with Crafty and Stylene critiquing and improving fan-submitted characters from existing properties.
- Out of all the spin-off hosts, Messibelle received the most significant changes before she was formally introduced. Scribbled-Death's initial concept art for Messi was far more modest in execution, placing more focus on her snail-motif with her massive, slug-like lower body. Alex played a big part in making Messi's design into what it is now. Most prominently, he gave Messi humanoid legs, but he also did more to emphasize how raunchy Messi is as a character. Her body became exaggeratedly skinny with plump assets (including a very fat butt as a nod to how bottom-heavy the original design was), her outfit was adjusted to accentuate those assets, and she received a more expressive face with her signature heart-shaped pupils.
- Back when Season 4 was still in production, Alex and his team considered splitting off the show's storyline segments into their own accompanying series, called Dr. Crafty Stories. They would also apply a distinct label to the thumbnails of older videos containing important plot elements, to make it easier for those invested in the story to follow along. To test the waters on this idea, "Questions and Answers" was later released, doubling as a preview to Season 4. However, this approach proved to be far too confusing for the team, so they reverted back to the original storytelling format. "Questions and Answers" became the opening of the first episode of Season 4: "We're Back! A Crafty Story!" The idea of thumbnail labels was never fully put into practice; only "Magic Kingdom Mania's" thumbnail has one.
- Season 4 was going to end on an RPG Month. However, after experiencing severe burnout from producing Hero Month in Season 3, the show's production team decided to improve its management, with the changes taking into effect midway through Season 4. Consequentially, the team was forced to scrap the original finale month for Season 4, giving the team ample time to adjust to its new work plan but leaving Season 4 with only five months instead of the usual six. Alex would later upload the completed pieces that would've been shown during RPG Month on the show's website.
- For "Crafty Horror Picture Show," the Halloween Month Season 4 finale, it turns out that Crafette singing a rendition of "Sweet Transvestite" was plan C: Alex revealed in the Crafty Discord server that the original plan was for Crafty to wear the ensemble himself, but Alex wasn't able to properly hit the notes needed for the song. They couldn't find a male singer that could match Crafty's voice and sing the song properly either, so instead, they decided to give Elsie Lovelock the spotlight as Crafette.
- Production of the Season 4 Patreon Episodes ceased following the announcement of Dr. Crafty's hiatus. All that remains of them are the illustrations, which Alex had already posted to the public Discord to serve as a preview for their respective episodes.
- A stream held in December 2022 revealed a lot of plot threads and unused ideas for the scrapped month of Season 4, and even much of Season 5.
- A set of Power Rangers-themed episodes were under consideration for sometime after Season 4, with evidence of the theme being dropped at the beginning and end of Season 3. The fan character Rob Otto is shown designing a mecha for Crafty in "Crafty Fan Characters," remarking that its "morphin' time will come soon." The mecha's blueprints are later shown among the data Screw and Mindstein have collected on the Crew in "I Need a Hero Academia" Part 2, alongside three other designs for Nurse, Pepper, and Messi.
- Throughout the Crafty series, hints about Pepper's abilities and her past had been included in certain episodes. One particular trait called "Boiling Point" was almost named-dropped in the Hero Month Spin-off Special, when Pickles suggested using it to free themselves, Messibelle, and Crystelle from their dungeon cell, but Pepper immediately opposes the idea instead. The ability was planned to have a quiet introduction in the scrapped RPG Month of Season 4, where Pepper would use it off-screen to help defeat a boss-like enemy in a comedic fashion. Crafty would christen the ability as "Spicy Pepper," as if it were a transformation, but none of the other co-hosts would have shared his enthusiasm with the name. Boiling Point would have then been expanded upon in the subsequent Season 5, but due to the series being shelved, it is unknown how significant of a plot point it was going to provide. However, it's implied that it would have been a crucial part of Pepper's backstory at least, as according to Blue-Paint-Sea, Boiling Point is considered to be not only her most powerful ability, but also her most dangerous, and has been teased a small handful of times during the show's run:
- In the episode "Roses are Red, Black, White, and Blue", Pepper has a waking nightmare about torching a forest. Blue-Paint-Sea confirms this to be a vague recollection of Pepper using Boiling Point at least once during her past.
- The biggest ongoing hint at the time, however, was her noticeably-mismatching associated character color (maroon), which was intentionally chosen to be the first big clue towards Boiling Point.
- The inciting incident behind Sasha and Crafty's breakup would have been revealed here. When they were still together, Crafty started receiving college acceptance letters. Several universities were impressed with him and wanted him in their student bodies... But Crafty recognized that if he joined any of them, he'd be leaving Sasha behind. She wasn't comfortable exploring the world just yet, and as his first love and friend, he respected her desires while wanting to spend as much time with her as possible. He promptly decided to hide every letter he received, from not just Sasha, but his parents, to avoid the matter entirely and hold onto his newfound happiness for as long as he could. Eventually, however, his parents did find out what he'd been doing; during a tearful conversation, they would intuit the motives behind his actions without directly confronting him, not wanting to take away what made him happy despite knowing he was throwing his life away. Sasha overheard this conversation, and, blaming herself for holding Crafty back, she decided to flee without saying a word, leading to Crafty's long-standing bitterness toward her until Season 4.
- There would come a point in Season 5 when Crafty would invite Sasha to stay with him and the other Crewmates in his castle for a few episodes, which would explore her dynamics with the rest of the cast. However, Crafty would become aware of Sasha's filmmaking career in California, and how her lengthy absence has been noticed throughout the state. It would occur to him that she's repeating his mistakes from back when they first met by leaving her opportunities behind her to stay with him, and he'd confront her about this as one of the final conflicts of the season. Both parties would handle the matter much more gracefully than they would have earlier in the series, and Sasha would ultimately decide to leave for California on good terms with Crafty. From there, Crafty would finally address Nurse's crush on him head-on, and he'd reciprocate, leading to the series definitively exploring what that relationship would be like.
- It would have been revealed that some of Screw's original personality remained despite Mindstein's modifications of her, and after one last confrontation with Nurse, she would be restored back to being Hazel. What would become of her after that wasn't revealed, but Alex did explain an important retroactive detail about "Magic Kingdom Mania" that was going to be unveiled: Screw was deliberately responsible for sending Crafty flying over to UA High School. For a brief moment before landing her punch on him, her empathy overtook her loyalty to Mindstein; she quickly, silently calculated the exact distance necessary to send Crafty to where he would find help.
- At some point, Disgustilda would be revealed to be Sasha's mother, confirming the series' hints about her being an Infinia.
