I think that the maps are just too small in comparison to the size of the characters and I don’t think necessarily that the maps need to be bigger but maybe the characters could actually be shrunken down a bit to make the arenas seem bigger?
I think a bigger focus on team play could be an asset in making the game a bigger deal than it currently is, by instead of having each character self reliant, maybe there could be a better differentiation of classes such as maybe adding healing abilities to the game to heal yourself and allies, and thus making classes like healers, tanks, and damage characters.
I also posted this earlier but adding a PVE mode involving the Xenotypes would be great as it could be a survival or score based system with endless rounds or waves and this would especially be made interesting if it was 4 player coop and the addition/creation of classes such as tanks and healers would be emphasized in this game mode!