The fact that they can do a wakeup attack makes it not free (Except for wakeup attack timing being so wonky). The mixup is stacked in their favor in that situation, yes, but the more I thought about it the more I prefer this to SF4's design, where typical BnBs for punishing command throws do more than aforementioned command throw, skewing the risk/reward against grapplers that aren't Makoto (Who is borderline crap anyways). And that's only off specific oki, not anywhere, so using command grabs still carries a large risk if they aren't knocked down.
Back to the main topic, there's nothing I can say that hasn't been brought up, but what the hell I've got time to spare right now lol. The order is from most to least important:
1: Shitty netcode. This should be a major priority if possible.
2: Lag on PS3s. Another major priority, this isn't common but when it does happen it's bloody awful.
3: Input system. Pretty much what DandyJ said, not being able to do cancels from d1 or specials from block without going back to neutral is really awkward, and I can't think of anything positive that it adds to the game unless you like really pointless execution shit.
4: Wakeup timing. I don't even need to elaborate on this.
5: Walk speed. I don't see it being a problem if it were slightly faster across the board, and it would help people with zoning + AAing with trip guard.
6: The damage on interactables, and those goddamn reappearing flying robots. The interactables that hit twice for no reason if you try to armor them should be looked at as well.
7: Meter gain on MB'd moves. As much as I like having a ton of meter to do whatever I want with, stuff like Aquaman's EX stabby stab 24 times in a row with a full bar is silly even just on principle alone. At least make it so the MB moves themselves don't build meter.
8: Music. It's not likely, but ripping off Tekken Tunes from TTT2 would be nice, and wouldn't involve hiring an orchestra or musicians.