It would have to start out with three options of whatever spec's are available. For example a paladin would have a choice between holy , prot or ret and that would be the spec the PVP tree would take from.
Additional talants would consist of existing "PVP" talants now being moved to the pvp tree with some added moves . For instance a soon to be crippled holy pali can pick up a move like "break" which (with a long cd of corse)would pop the pali out of purge.Maybe add sprints to all classes and /or snares ect.
I would also remove resilance from the game and instead make resilance apart of the mastery. Therefor not making PVP gear as much as a nessesity as it is now and perhaps add pets/ mounts and other cool things as prizes instead....and of corse some gear still. Can't hurt
Anyone else like to add to this or share thoughts on balance this would bring? If anything else to me at least....it would keep pve seperate from pvp