A new idea improved ad-hoc multiplayer

[Zinx777]

I think that maybe its possible but it's not practical in nature.
I know some good PSP games that got a playable netcode to them if that's what you are interested about like Shin Budokai 1/2 , the BlazBlue games and some arena fighters like Marvel Nemesis and Tales Of VS.
They are mostly full speed no matter what the distance you are from the other player/s .
But yeah the majority if not all 2D fighters require a good distance because they all use lockstep netcode (it was before the era of rollback netcode).