Not really. It is a fun game mode, whether solo or with a group, and they can give rewards that make it worthwhile to reward your time but don’t feel mandatory to compete in other modes.
Absent the torments, I have literally nothing negative to say about it. Since they allowed Hunters to test it, I have done very little else on the alpha, and even after dozens of runs I am still having fun and finding it varied enough that I don’t get bored.