yeah but Solid Snake was in Brawl and the Metal Gear Solid series have always been rated mature, so I think this can work. Granted, they'll probably tone down her sex appeal, but I can live with that.
Hey, if women can have Bendict SlumberSnatch or whatever his name is, we can have Bayonetta. Only hotter witch out there is Emma Watson.
Technically, Bayonetta 2 is already toned down compared to the first one. She won't be naked anymore, so it could work the same in Smash.