So I've noticed two things that seem a bit odd. As most people have noticed, Kat can't properly roll backwards while remaining facing her opponent. I am pretty sure this is a bug, as the animation clearly would have you believe that she should remain facing forward. They will probably fix this. Second, has anyone noticed how gravity dashing straight up has a strange kind of hiccup to it? This would be fine except that during her trailer, she is clearly shown being able to go further straight up, so I'm thinking there is either a bug here or they for some reason lowered her straight up gravity dash height, which is odd since her diagonal ones go the expected distance upwards. Buggy bugs are buggy.
Side note, anyone find it odd that Emmett can't fire his level 3 while traveling to the left? --- ... Nope, it's still the same.