/LOL No there is no wow killer out there. That's like saying the next O/S out is a Microsoft Killer.

Not going to happen, unless blizzard releases a new game that kills WoW themselves.

AION is a Korean Grinder

Which means alot of hack and slash to level your toons. They have somes questing but not like wow, you can level by quest pretty much to start the game up till around 15 or so and then the quest become group quests and to hard to solo. I played as a chanter (kind of like a paladin) DPS/Healer and I'm a very good player but still would get stuck on quests and had to group with friends to level. And alot of the time I would just grind as it's faster and easier then questing.

Once you reach around 25+ You get to enter the abyss and start PvP. The game is like warhammer where you pretty much PvP end game not much raid content.

WoW is a Raiding / questing game and not so much PvP. Most of the other games out are all designed around PvP content and so their PvP is great.

One really cool aspect of the game is the whole Flying thing as you can flight in the air and all of that stuff. I would expect blizzard to maybe add this into wow at some point as they tend to incorporate anything good any other company releases to keep customers in their game. Pretty much Blizzard is just like Microsoft and always adding other peoples stuff into their products for Free on next release. :P

Still a really fun game but not one I expect people to stay on to long and return back to wow once they get bored. It will be another Warhammer with a few million playing but still a good game.