I'm sick of going into a dungeon that is camped by a dozen bots who kill the boss in .5 seconds. Most of the time I just walk through a dungeon because nothing is spawned. Let me pick an option to run things SOLO.
You should also consider adding a system that flags someone for pvp if they've been in a dungeon longer than 20 minutes; that would let the players kill the bots and problem solved. Also, add something that auto-flags gold sellers for pvp so we can murder them also.