I Like the challenge UC Adaptoid, Heimdall, and Red Skull bring
I'm at the point where I can finish Master with 1 champ usually so I love an actual challenge in each event quest. It's funny how many people complain about tough fights or unfair. I think Domino is super tough and hate unavoidable damage, but I still can one-shot her even on Buffet.
Heimdall was easy........anyone who has a problem with him is not a good player or doesn't have any strong champs
Adaptoid was a tough, long fight which was awesome. Medusa destroyed him with armor shattered
Red Skull takes a lot of patience, skill, and strategy. Yes, Dr Voodoo can destroy him but he is beatable with anyone
I love tough fights because outside of AW.......which can get almost impossible sometimes, UC Event is the best difficulty because it is hard but not impossible. I agree that people should practice, rank up the right champs, and get better rather than complain at difficult content. If it's too hard, then you're just at Master level right now, not UC