Ubers my favourite thing to do, meant to be the hardest content and thus only doable by specialist characters. I guess that boils down to melee chars with open wounds + life tap, crushing blow is nice but not necessary.
It can be done solo by all classes, it’s just more difficult for some than others. I think it’s great content, but sure they could add new challenging content that is a little less biased against casters. Sorcs still remain overwhelmingly the most powerful and popular class in the game, so forgive me if I don’t share your tears.