I guess this kind of thing would only apply if they made console a version 1.2 or something since its system changes, but just some things I've noticed...
1. Pushboxes in the middle of sprites are really skinny, makes cross-ups weirder than they should be, others and I have mentioned this before. Would be nice if they could adjust how close you can get to the middle of a sprite so things aren't as random.
2. Input buffer has some flaws, particularly dp conflicting with half circles in the same direction. As an example, dashing into Athena's command throw produces a dp, and if you have 1 drive stock and it hits, a dp drive canceled into a command throw. Funny story, I saw the CPU do this. Even they can't dash and command throw! This has never been a problem in games where Athena, (or anyone else) had both these moves.
3. Make it so inputs stay in the buffer during the GC roll freeze. In past games, you could react to the GC roll screen freeze and stop what you were doing, otherwise you would continue your string and possibly get punished. In XIII, the GC roll freeze virtually nullifies inputs, so even if you input a special, it doesn't come out. To note a specific case, K's cr.B xx flame would actually be punishable by GC rolling the cr.B, but the freeze canceling the inputs makes it so the flame will never come out if you GC roll and he will be safe, without having to react or be mindful of it.