Her character has already been ruined by Jason Aaron and others, long before Bendis came along. If anything, this is an opportunity to give her some complexity/dimension back (she works better that way). Oh and the "its because of the movies" argument kind of falls apart on account of the fact that they're essentially adoptive siblings in the films. If they really wanted to ape the movies, then they'd have her be secretly married to Magneto or something.