As far as world pvp goes, for priests you won’t be doing much wpvp because if you level in shadow spec people will just be running away from you when they see you, and you will melt anyone that tries to gank you with zero effort. Only downside is having to respec for raids. If you want to experience an actual challenge for pvp roll a hunter just be prepared to learn how to kite very very well and deal with the “huntard” stigma.