Just thought of another consideration- with PC/PS4 crossplay- they're going to have to make it where some PC folks don't get a huge advantage due to scripting and macroing inputs, which is much easier and more common on PC.
Crossplay is going to open up a hornet's nest of complaints about PC gamers, especially if my suspicions come true and Ono/Capcom don't take this into account.
Input design was the big problem with SF4 (and I don't mean in terms of inputs being easy, I mean in terms of how the inputs were read which led to all sorts of problems), hopefully Ono can fix this in SF5, but I have my doubts.