I agree with GvG that would be totally awesome! Also I believe that the pets in PvP will be just as important as PvE if not more. Also if you could earn say plat or gold from PvP then you would have more players. Oh and maybe xp! PvP positions such as general and captain and the bonuses thoughs players would give out to other player in certain PVP battles would be awesome! I'm not saying guild ranks transfer into PvP but that certain maps (large ones like 20v20 or more) that each side would have like one emperor and two captains with boosts applied to people in range. This would make capture the tower/hill sort of stuff so amazing with such a large map! Also you could imply caracters on each team like an assassin. This player would have his attack increase 100% and his defense lowered to almost none.

This is just my dream/fantasy PvP

-Vys