As someone who LOVED the previous two South Park games. This give me no interest.
Can't really tell exactly what this game is, but it sounds like a brawler, survival game, or just multiplayer focused game.
Not saying it won't be good, I hope it is, but using Cartman in a wizards robe, made me hopeful for more South Park style RPGs. This feels like it'll be cheaper (to make). Though I'm sure it'll find some fans.