I was really supporting Skullgirls.
It's really ballsy for a small dev team to make a fighting game, and you can really tell that it was a labor of love for most of them.
Honestly aside from maybe more characters, I don't know what else I would even want in that game, everything is great about it. No bugs, good balance, best netcode ever, even if you don't like art style the quality of the aesthetics is great, the soundtrack is great, training mode is great, etc. (All for 15$)
Not to mention they are one of the two real American fighting game developers that are left (them and NRS) as far as I know.
I think the thing preventing it from having a bigger player base is that it plays more like a vs. game (like Xmen vs SF or MvC1/2 for example) but looks more like an anime game.
Anyway, support them!