They should not change the core mechanics of the game though.
What I would like to see is general improvement to PvP in form of an automatic matchmaking system, throwing you into arena with random oponent of similar rating. This way you could enjoy PvP nonstop, at any gear level.
Enigma is acutally one of the cheaper items. It gets much worse when you want a good circlet, amulet, perfect charms etc.