If the pvp system is ever coming alive then there should be a limit of generals for different size of pvp-islands.
Im not sure whats the main reason for the delay of pvp-system but I think one of em is unbalance of players. Some players have only few generals and "endgamers" have like 12-17 generals. If you put these players on the same island fighting for resources there is no doubt that the player with much higher number of generals will win.
However! If the game limits the number of generals that you can send to the pvp-island then the fights can be more fair. Like for the smallest pvp-islands with less resources on it could have a limit of 3 generals and the biggest pvp-island there is no limit at all.
What do you think?