The problem, at least what I think is the problem is that there is character switching in the first place. To make this mode work, they need a new hero who is essentially a robot character who can use all the weapons, so there is no time between hero switching which royally messes up the mode. There are frames where your character is essentially immortal, and switching characters doesn’t help. The full heal isn’t necessary.
It would also help if they fixed the damn hit markers in the mode. I’ve gotten up to Ana and a good 3 out of 5 shots just wont register, meaning I get screwed over, not able to progress because the game just doesn’t want to say landed shots hit.
…and add East Coast servers…