At the moment i am trying hard to ruin my mood by struggling with survival mode on hard difficulty. I know, i know ... that's my own fault.
What I noticed is that I
greatly miss a retry-mechanism that quickly let's you restart a game with a custom-map, a certain character and a certain modifier-setup. It's pretty annoying to have to set that up on every retry. Especially if you are already angry about dying because of your own fault or some unfair situation (which often occurs in survival-mode).
The retry-button could appear in the menu when pressing ESC and after you died.