It wasn't a bad arc, it was just something that couldn't possibly be dealt with satisfyingly in a movie that's mostly about other characters. She goes from trying to kill/destroy the Avengers for something they didn't do (same as Zemo in Civil War) to fighting alongside them and adopting them as her new family in very…

The children and their incredibly convoluted origins came up in issue # 8. That's an issue where a therapist talks with Wanda about all her continuity problems so it's worth a look as a stand-alone if you enjoy hearing someone talk about all this stuff.

In true Wanda tradition the description of her powers seems to change constantly. Vision was originally given a line in Civil War about how she "manipulates molecular polarity, enabling her to alter reality" but it can only be heard as part of the gag reel.

She also seems to be caught up in Marvel's psychotic need to downplay any character who is linked to Fox. Everyone thought that when Marvel did that "Quicksilver and Scarlet Witch aren't mutants or Magneto's children" retcon it was because of the movies, only Wanda is still banned from Marvel cartoons, most Marvel…

Wanda seems to be a particular favorite of middle-aged guys who read Avengers comics in the Bronze Age, when her romance with Vision was Marvel's most compelling ongoing soap opera. Look at any writer who likes her - including Joss Whedon, who got her into the Marvel movies despite the rights issues - and they're…