I had an idea, just something to try maybe once. How about for a couple of days, offer a couple of game mode variants where there is no super abilities? Like keep the melee, but no one has supers. I don't know if that could ever be something a good majority of people would like, but it would be interesting and I believe it would be more challenging. I am iffy on crucible, and I absolutely loved iron banner, but I think this could also be a fun challenge to try in pvp.