I gave final fight double impact a spin last night and played through it twice. I LOVE the arcade bezel combined with the CRT filter. It really gives you the feeling of playing on a cabinet. The multiplayer defaults to letting anybody drop in on your game at any time, which is really cool. That feature really captures the arcade feel moreso than any other remake/rerelease I've played. On my second game last night, I had 3 players join in what I started as a single player game. One dropped out after a couple minutes, one finished a level then dropped, and the third guy played several levels and finished the game with me.
I haven't had that happen to me in about 15 years.
Emulation seems spot on. Only odd thing I've noticed is Jessica seems to be absent from the opening. I've picked up beer, but haven't found liquor yet. Poison is still a chick and the bathroom doors say "sex" all over them. I just wish players couldn't attack eachother. I always hated beat em ups like that :/