Most of the problems you describe are already mitigated by the players being returned to the start of the level. If they go back there and the Shortcut leads to just outside the boss arena, they can type their piece from the start of the level and if the tank pulls while the healer's doing so that won't be the healer's problem; They're still on the other side of the dungeon.
I admit I'm mostly encountering casual content, and playing on console besides (so the amount of typing of strats between fights is pretty limited) but I haven't seen the level of post-death strategy outside of a few where there's an actual bug (i.e. Halicarnassus in Haukke Hard) to be explained.
It seems like the devs agree with this, too, as newer dungeons put the output of the shortcuts closer to the end of the dungeon than before. I just wish they could go back and update the older shortcuts to do the same, if that's their stance.