Depends on how they run it. We need to wait and see if it is a one room coliseum, aka clusterf_€k, with potential cheese spots or if it multiroom which could include both wide and narrow battle spaces. Without seeing anything about it there is unlimited potential to the mode but it can just as easily disappoint you if they fail to create the right kind of enviroment. I know I would be happy with the diversafied multiroom, which actually sounds more like a raid, than a one room barage of overbearing enemies.