Audience-Alienating Premise: It was a follow-up to Heroes in Crisis written by a writer known for a history of sexual harassment and disliked work who enjoys nepotism and an artist whose work is highly contested at best and whose work on The Flash in particular is highly criticised. Notably, according to sales figures put out by Diamond, since DC Rebirth, any book staring Wally West has sold extremely well, roughly around 50K+ unitsnote Titans (Rebirth) for instance sold such high numbers during the first few arcs featuring Wally, before he left the book and the sales dropped; The Flash (2016) would get a sales bump to those numbers for its first annual, Perfect Storm and Flash War storylines, each one featuring Wally prominently, if not putting more focus on him than Barry, only to drop when he left the book for HIC; . Flash Forward barely cracked 20K, with many people explicitly citing Scott Lobdell's involvement as a deal breaker.
Harsher in Hindsight: The reveal of Irey and Jai West still existing in the second issue makes Barry Allen and Iris West's actions following the end of Flash War hard to stomach, when the two consented to having Wally sent to Sanctuary to make him get over the disappearance of his children, which eventually led to Wally's breakdown as a result of Sanctuary's incredibly inept therapy methods. Having proof the twins have been stuck in the Dark Multiverse and thus it was possible for them to be found makes Barry and Iris come across as incredibly selfish for how they decided it was better for Wally to give up instead of actually helping him look for Irey and Jai, and how so much unpleasantness could've been avoided if not for them writing off Wally's concerns as a lost cause.
Hilarious in Hindsight: Issue 6's climax of Wally sitting on the Mobius Chair and acquiring the powers of Dr. Manhattan, essentially becoming a god, becomes pretty funny when Dan DiDio, then co-publisher of DC and infamous for hating legacy characters like Wally, was let go of DC shortly afterwards.
They Wasted a Perfectly Good Character: Despite being, ultimately, about Wally finding his kids and restoring his family, Linda Park, his former wife, is trivial to the story. He briefly meets an alternate universe version of her, known as Lightspeed, with the powers of Godspeed, but otherwise Linda's entire role and characterisation is to be, at the beginning, sympathetic towards his stay in prison as he pushes her away, then later have her memories of him restored and reunited with their kids. The reason this feels like such a waste is that typically in these sort of stories in the past, Linda played an active and key role in her and Wally's journey, from actively pursuing leads to fighting Kobra head on, to making a Deal with the Devil herself to try and save Wally, to searching the multiverse lost with him. While she's not part of every last little thing Wally does, the fact she's so uninvolved in a story that's so directly tied to Wally's lost family feels like a missed opportunity, especially as, while her memory is restored, it's via a literalDeus ex Machina, and not her actively working with Wally and rediscovering it herself. It says something that the initial Titans (Rebirth) story, "The Return of Wally West", had Linda as a Damsel in Distress and still gave her more agency.
Too Bleak, Stopped Caring: The first issue got hit with this to a degree, as much of it focuses on Wally recapping his actions during Heroes in Crisis and being suicidal.
