No plans to revert the +/- 2 level range currently in-place. The +/- 5 level range for PvP matches is too broad given the wild variance in equipment.

From looking at the game server activity, most people are engaged in the endgame content - leveling to 85, enjoying the new insane pets, etc.
Level raises always empty the PvP rooms. Happens with every new cap. I would expect to see a lot more players in PvP after they've finished capping all their endgame toons, etc.