Time for some devils advocate:
We're already given the chance to switch gear, shrine, regen, etc. in town, while running catacombs.
What I'm now seeing is, "I want to switch positions as well!"
So that says that if your position doesn't work well for an EP or ambush or whatever, just pop into town, change it to something different, come back, team succeeds?
Apparently this update has made the game so excessively difficult that everything needs to come on a silver platter, no? What happened to team planning?
Edit: Yes, I am the 1 and only "no" vote. Kiss my ass.

This update is not hard if you have common sense, that and patience seems to be rare virtues here lately.
Voted yes, would make sense. You could even only make it work in a non-combat round (group is waiting in black not actively attacking mobs) if it is that important to you Bob that people don't rape your EP's.