There's nothing that can be done for sliding shotgunners, aside from making sliding worse(which that is completely unnecessary to nerf) or nerfing shotguns (please, I'm not a shotgun person, but that'd also be unnecessary.). However, the biggest concern for supremacy for me is how laggy it is. You'll be likely to meet some red-barred people or people who are laggy af. One time in supremacy, the game loaded, but I was the only one in the map...it seems everyone else was in their own map because I can see people doing their emote actions through the uh...actions messages(the thingies on the bottom left). To me, I think it was an interesting game mode if it weren't laggy just...not really right for iron banner. At the very least, why not just have iron banner change its modes every day? Or just leave it on clash.