As good as CvS2 was, I'll always have a soft spot in my heart for SvC Chaos. That weird-ass soundtrack, that redone Dhalsim sprite, the pre-fight talking scenes. And Goat Nutz is in it, which is always great. Loved SvC Chaos. I'd love another one. It was just weird, in a good way.
And of course Violent Ken
and hey, best part of MvC1 was that soundtrack