I have 5 druids (boomkin) parked at level 62. They are okay stealthing instances but you need to be a couple of levels higher than the mobs in some cases (where mobs are too close for comfort). I also have 5 rogues at level 35 which are really good at lower instance runs. I can pretty much sap everything in my way and they are becoming really powerfull bringing down mobs and bosses. i don't expect they will do as good in outland, though. Down the road I plan on 10 boxing and moving one of these teems to 5 other accounts. Now that would be some incredible fun!