You know, what I'd love to see is a real, honest to goodness war somewhere in Hyboria. And I mean with armies beating the living crap outta each other.
This has been done before. City of Heroes did it when the 5th Column (Neo Nazi Criminals) were taken over by the Council (Fascist Criminals). It was fantastic, and anyone could get involved in the action. There were whole companies of soldiers in the streets in at least two zones blowing each other up.
Later, when City of Villains came out and we had two different factions, there were battles like this in different cross-over zones. The forces would gather, then go into battle.
When you have a game like AoC, it's tailor made for such combat.
Especially if you could become Vanir, Nemidian or whatever, and pick a side. It would make for great incidental PvP as well.