I just had my first 450+ million game and got to do the black order MB and defend the gems. It was a lot of fun.
Maybe the sounds and music are a bit underwhelming for sure but it was a lot of fun just trying to get the shots.
I do agree with a lot of people that the game is still lacking better music and callouts during these parts of the game. It takes a lot of work to get to it — for me at least — and I wish there was more stuff happening, better callouts, thanos really mocking u when you miss a shot, etc.
Avengers callouts could improve too, as you are almost done with a mode I wish there were other auditive cues as to how close you are to defeating your opponent or being defeated, with callouts indicating one way or the other. The game can be cery fast so looking at the screen can cost losing the game/ball.