I LOVE Street Fighter Alpha 2 and EX3. Those games have such an old school style, but kinda not at the same time. It’s like, the basics are all there, but you also have some huge combos if you want to use them and some neat systems to mess around with. Old school style of fighting, but with a little dabble of new school systems like tag teams and custom combo modes or special blocks (alpha guard/air block).
From what I read about NeoGeo Battle, that sounds like the sort of thing I’m looking for.