I almost forgot the idea I've been shoveling around.
I've been thinking about ideal pvp environments, and recently I had a new idea.
Why don't games allow guilds, and factions to vote on when they want to declare war on one another?
Think about it. If DKO had strong PVE content, and followed the normal flow of war, it would not have scheduled castle sieges, and it would not have scheduled faction wars.
Instead, Leaders (or the entire faction(s)) would vote on whether or not to spill blood. That way, Guilds could vote to go into full out war on a guild, or you could decide when pvp was too bold or adventurous to a game's health. You could have peace times, and war times.
I think DKO with its lack of real pvp would lend well to this idea.
All it would require is an alteration to the instance queuing programs, to "sign up" for the war, and then an advance warning to the entity war is declared upon, that there is a battle coming, and to prepare.
And, if a Guild loses a war and begs for armistice, the winning guild would possibly gain some property (a castle or money) in exchange for a cease-fire.
I don't understand why no Medieval game has really integrated a real war simulator like this.