It might actually be fun (and a lot less... hostile) to have some sort of "official" tournament. We pick 24 fighters from each series, pair them up at random, and have the community vote on the winner of each battle one at a time.
Then there would be no "X can just do this or that and instantly defeat the entire opposing cast" -> "yeah but Y can do such and such or is immune to that ability for these reasons" -> "well then X will use that while Z does the other thing" and so on and so on. One-on-one.
For example, I don't think anyone will complain about Drake beating Mario in a one-on-one setting. But in some big dumb free-for-all, you get people saying Drake can't beat Mario if he has already been killed by Sonic / well Sonic can't kill Drake if he has already been killed by Kratos / well Kratos can't kill Sonic if he has already been killed by Shulk / on and on and on for 40 pages which is what's happening here.
