maybe instead of straight up banning pokemon, having a list of "banned" pokemon for each gym, and then only allowing each person to have one of them? Maybe a list for each gym or ideas for pokemon can be generated by the community, and finishing touches could be done by the council, if we work off of the idea that
@sebesmos thought of. It's hard for a council to come up with all the right pokemon, because we haven't controlled each gym ourselves, so community discussion would be important if we took such a path.
Also, should we possibly ban stealth rocks from certain gyms? It's iffy, but gyms like Ice have issues with rocks, because the pokemon that can remove rocks would be weighted down by having to carry rapid spin, and its hard to do well with rocks and bullet punch. Rocks also hurt fire a lot, as there arent any reliable fire spinners, and fire types with roost are 4x weak to rocks.