A question many have asked themselves lately: Where is the war? Where is the fighting we see in the magnificent intro?
Why not simply make a war like that? Impossible with the system we have now. The only PvP is in Ent, Tir and Newland Arenas. I've been to the political zones between OT and Clan many times, rarely see a single enemy there.
So here's my suggestion: Two constant lines of NPCs constantly gunning at each other. They are precisely of similar strenght, same respawn rate, and the front does not move, neither forward or backward... until a Player starts to meddle with it....
With the help of Players, one line would slowly beat the other line and push it backwards. The result is a constant war moving forward and backward across the zone, where you can join independently of events and such. Of course the hate list of NPCs have to be modified, so that you can attack them and survive, so that they won't target Players until those do enough damage independently of their own NPC allies.
Behind the main "trenches", you can have guns attacking enemy Players who go too far into the other's territory without being hindered. Then you may have AA guns with superior range only attacking Players in Yalmahas.
A little bit more: When I say NPCs, I do not only mean infantry, but also Armor, Howitzers, Mortars and hovering Gunships, equally shared, so that they keep the front unchanged unless Players arrive. Now who wouldn't agree on that to blast a Gunship with bullets and nukes for a while, then with satisfaction see it fall to the ground and explode into a billion pieces, would certainly add a new dimension to PvP and the War in general?
Imagine this as being a "constant event", that would allow everybody to participate and affect the storyline, while the GM's get time off to prepare some more focused, delicate and detailed events, for special interested people.
