I play a shadow priest. And I'm trash on AOE but I was expecting that anyway with all the reporting from beta, but I am absolutely demolishing boss fights. Way ahead of the mage in my guild who's more geared than I am. The desparity is huge on trash packs true. The whole getting kicked thing for low dps is probably true. (everyone seems really impatient when i do even normal dungeons on my DK alt) But you can totally run with a group of guildies or people you're cool with and go at your own pace. Every class seems to have a strength now. And also these are normals/heroics/mythic. Mythic+ is going to be so different with modifiers and raids with things living longers than 30 secs - 2 mins.