You forget the best part Trynant: custom assists! Unlike games like Marvel vs Capcom where you can only select from a predetermined list of assists, Skullgirls lets you input any normal or special move as an assist.
Also there is no comeback mechanics, making this the only fighting game this generation without them besides KOF13.
And there is a tutorial mode that actually teaches you how to play fighting games, and goes over stuff like high low mixups, cross ups, why not to do stupid shit on block (funkblast), etc.
I bought this on launch and haven't got that in depth with it yet. I like Ms. Fortune and Peacock so far. Once my summer break starts I'm going to be spending a lot more time with this game.