Ok now i think i found a way for lots of new ways to exploit stuff
What you do is you take a Priest or Warlock - and then the exploider.
You go to a instance portal and write "/script SetDungeonDifficulty(3);"
You cant enter the instance now.. but some places have like. a wall you cant go trough, now you have the priest fear you in there and you can run around in serval instances with no mobs and such
Tested and working
Enjoy.