I think something rather important that is getting ignored is that even with "custom" gameplay a charter should feel loke that character. I.e Ryu should feel like Ryu no matter what gameplay he's made in.
Basically, kind of a big deal.
You listening? Ok.
Grass grows, sun shines and brother...I hurt people.
I'm a force a nature.
If you were from where I was from, you'll be friggin dead.
WHOOOOOOOO
Because shut up, that's why