I don't take this nearly as hard as many people in this thread seem to. For one, they didn't seem to be too proud to announce it, more like a guilty pleasure. And I can't really fault someone for a guilty pleasure of theirs. Second, this doesn't mean they're going to oversexualize Lightning. I'll stand corrected if they do, but I doubt they will. They still know who Lightning is.
Saying they "made the conscious decision" makes it sound worse than it actually is IMO, because they probably didn't think it was such a big deal. Now if they had come out and proudly announced "LIGHTNING NOW HAS BIGGER BOOBS!" it would be a different story.