Parallax Scroll
Banned
It's a slippery slope in allowing it, too, if not a worse one. Just say someone maps Down and Forward to a button. All they have to do is double tap that, and hit a punch button, they get a DP and can virtually never miss it. Double tapping a button is 10x easier than an SRK motion on a stick (an input that people drop in tense situations). That's the reason I don't like it.
I hadn't thought about using it for SRKs.
A hitbox lets you double-tap the down and forward buttons to get the same result, and double tapping 2 buttons is pretty easy too.