I've noticed that some players like to team up in this event regulary. And not gonna lie, it's a joy killer when you have to fight people who clearly are working in a group. Tracking some chat history, I've seen some complaints in the past.
It is not a recent problem. So, my suggestion is to add a rule against teaming up so people playing solo will have equal chances. Since GMs are doing a wonderful job overseeing us, it shouldn't be too much of an addition to their actual job? >_<
Idk if there should be some specific penalty, thats up to GM for decide, but maybe every time they get noticed for regular teaming up by GM's they might get banned for the next 1-2 dodgeballs?
Also, not wanting to be a joy killer myself, maybe there's an opening for team-based dodgeball? Like, people who join dodgeball are randomly sorted into teams of two or more? Like in BG? ^^