hi there, i just wanted to share some idea that might add to the game, you could inmplement later on.
in order to add long playability and balancing deepth you could add some way of realm rank (daoc:)) where you gain exp for doing sieges stuff and kills as example. (highly geared and ranked player give more exp)
so for gaining exp you would go up in the ranks of your realm granting you realm talent points, where you can polish your character with small benefits like stats or/and some group related skills or whatever, depending on your class/race etc.
the first half of the ranks you would go up relative fast, but later on you would need realy long activity to get to the last ranks (i am talking like 1-2 years hardcore)
his is one of the factors why peaple still play daoc because of the long term you can still shape your character (there also of course others but i wanted to mention that one)
leaving that faction would cost you all the exp or partialy after you reach some lower rank, so lets say you have 10 ranks for example, you loose all the other ranks down to rank3 every time as you change your faction (so peaple would have time to decide, and there would be some penalty for changing)
for those that dont know daoc(dark age of camelot), i would say its one of the better pvp games out there, when not even the best related on large scales battles and sieges, many games tried to copy some part of its pvp system but failed in my opinion.