All Wanda needs is editors who tell other editors that there are limits to what they can do with her. If after House of M the X-Men editors had been told: "hey, we may want to bring back the Scarlet Witch later, please don't make her responsible for a bus full of kids blowing up," no one would be mad that she's back and walking around free.

Marvel barely even cares about turning their actual stars into fascists and murderers for the sake of an event, for a B-lister like Wanda they just don't care.