Angst? What Angst?: After the first arc of vol.2, Stephen Strange said that he would leave the team. It was not safe for the others, as the brother of Jericho had sworn vengueance against him. Luke Cage did not care. Whoever received similar threats in the past, raise your hand! (all the team did so)
Bizarro Episode: The storyline about Nick Fury and The '50s Avengers, which has no bearing on the series, and aside from one miniseries has never been mentioned again.
Luke Cage for Brian Michael Bendis, whose run on the book saw him go from Hero For Hire to leader of the New Avengers. Luke is one of three characters (the others beingWolverine and Spider-Man) to remain on the team for the entirety of the first two volumes. While he did become a more mainstream character under Bendis, many grew tired of his exposure over the years.
Jessica Jones, who was merely a supporting character in the first volume before becoming a full fledged member of the team following Dark Reign and actually was created by Bendis. While she was initially a very liked character, especially due to Alias, fans grew tired of her very quickly, due to her seemingly needing to be in everything. Jessica being the one to stop Scarlet Witch's breakdown in a What If? and her and Luke being the ones to bring down Spider-Man's archenemy Norman Osborn, rather than Peter Parker himself, in the opening arc of The Pulse didn't help.
Critical Dissonance: The series received very harsh reviews from professional critics, who lambasted the inconsistent art, the clichéd dialogue and the weak plot, which many accused of placing style over substance and relying too much on crossover events to be able to stand on its own. However, most fans tend to regard New Avengers as one of the stronger Marvel titles from the 2000's, specifically praising the action scenes, the charming characterization of Luke Cage and Spider-Man, and the clever use of Foreshadowing to set up daring storylines that changed the status quo of the Marvel universe.
Franchise Original Sin: Much of the criticism of Bendis' writing actually has always been part of his work, it's just that it's more noticeable when he's writing a plot-driven superhero book with a large cast as opposed to character-driven street-level stuff focused on a handful of characters.
His repetitive, casual dialogue that has characters sounding the same. With less characters, many of whom are street-based, the casual tone makes sense and humanises his characters. When he has tons of characters with vastly different personalities, characters all talking like the same smartass stands out a lot more.
His Writing by the Seat of Your Pants-style of writing works in character-driven work because the stories were focused on character development and interaction. New Avengers tries to make its plot feel important and character work is an afterthought, as most of the characters had their own series where their character work was more important.
In an early issue of the series, Daisy Johnson is needed and afterwards, she declares that her Avengers codename will be Quake. Steve then informs her that they aren't looking for new recruits. Years later, during Hickman's Avengers, Tony and Steve are expanding the lineup, and right there on a list of recruits is Daisy Johnson.
In Issue #28, a disagreement between Wolverine and Luke Cage causes Spider-Man to quip "Oh great, Civil War Two". While this was only meant to be a joke about the 2006 Civil War storyline, the line became more amusing after Brian Michael Bendis wrote an actual series called Civil War II, whose mixed critical reception surprisingly matches Spider-Man's unenthusiastic remark.
Narm: Ms. Marvel's idea of an insult? Calling someone a "hump".
The Scrappy: The Sentry was never particularly popular, especially when compared to the other Avengers, but he became near universally hated as the series went on. His many conflicting backstories led to inconsistent characterization and aggravated those who were interested in his personal arc, while his ever evolving powers eventually made him so overpowered it forced writers to come up with excuses to write him out of the stories (often by exaggerating his mental disorders, which paradoxically made many see him as whiny and useless).
They Changed It, Now It Sucks!: The reaction a number of "old school" Avengers fans had, with the initial line-up featuring only two classic Avengers and the shift away from the global level threats the classic book dealt with.
They Wasted a Perfectly Good Plot: In the opening story of vol 2, it's stated that the Vishanti, the Big Good as far as magic is concerned in Marvel, are no more. Despite the fact that this should be a world-shaking event, it's never brought up again.
from professional critics, who lambasted the inconsistent art, the clichéd dialogue and the weak plot, which many accused of placing style over substance and relying too much on crossover events to be able to stand on its own. However, most fans tend to regard New Avengers as one of the stronger Marvel titles from the 2000's, specifically praising the action scenes, the charming characterization of Luke Cage and Spider-Man, and the clever use of Foreshadowing to set up daring storylines that changed the status quo of the Marvel universe.