Haven't seen this mentioned yet, but Samus's ftilt received a pretty major range nerf. In 4 it had the most range of any forward tilt in the game because of her long leg, forward pivot, and the fact that she slid forward on her foot during the animation. That slide forward has been removed, making her ftilt her least ranged tilt and putting it on par with some other tilts (e.g. Marth ftilt) that it solidly outranged before.