(I apologize if a suggestion has been made about this before, I couldn't find any topics on it)
Because the State War is at 3am GMT, any European players are all but barred from entering it, unless they opt to stay up until 3am. (Even then, most people could only do this on Saturdays)
What I suggest is having two seperate State Wars, one at the current time, and one at a time more suitable for European players. I'm not sure how large a portion of the players here are from Europe, so I'm not sure if it will really attract enough people to make it worthwhile, but on the other hand it could attract more European players to the game.
On a seperate note, I've heard something about certain quests quests only being able to be handed in at certain times, which is a related subject I suppose.