[quote name='franz ferdinand']A lot of WAR players are moving to Aion, because of the major issues in WAR that haven't been fixed yet, one year after launch.[/QUOTE]
This is my situation. I love WAR, but I came to the realization that the game really isn't going to get any better than it is right now. There's no new content on the horizon, so once you've maxed out your character, what do you do with him? RvRing over and over again gets boring eventually. Aion has a similar setup, but with 3.5 million players in Korea it's bound to be supported for a long time. WAR is already on the ropes after only a year.
I'm not sure what server I'm going to be on, but I'll be logging on over the next few days and rolling Elyos somewhere. I simply haven't had time to endure the two-hour server queues.
EDIT: I rolled Elyos on Azphel. Based on some of the guilds going there (PRX, Lucid Vision, etc.), it should be a very active PvP server.