CE being one button is fine IMO, as long as it doesn't REQUIRE a bind (like the stupid SWITCH button in SC4). No reason to punish people who can't quarter circle twice, to me that's just like L-canceling in Melee, why have button presses for the sake of button presses.
With regards to whatever...
@Party Wolf pointed this out to me at some tournament or another, and I've hit people with it somehow. Hilarious.
EDIT: re: 3KK mixups, yeah, it's definitely not a real mixup. I'm not recommending you use it with any regularity whatsoever. But like I said, some people seem to forget it's a...