Or if an admin-mod wants to do this, but anyways, what about making some sort of character choosing limitations. Let's say, you like the Buu saga, then you could say that only the strong characters from the buu saga could be in, like Goku, Vegeta, Mystic Gohan, the fusions, or if you like the classics, be able to have Goku, Krillin, Nappa, Vegeta, Piccolo, and Gohan. It hit me when someone suggested Nappa to be put in the game, i think this way, you can add the characters who were strong at somepoint in the series. I don't think it would be good to have a SSJ3 Goku, SSJ2 Majin Vegeta, Mystic Gohan, and Gotenks all against Nappa, this way, it would be possible to play as Nappa without getting your arse kicked.
And again, this is for down the road (future of ESF)
And again, this is for down the road (future of ESF)