Don't be silly, top WoW guilds won't move to Wildstar until they can safely assume that the game will be able to sustain itself off subs and that Carbine will be dishing out content at least nearly as frequently as Blizzard does. I'm sure a lot of players from top guilds will be trying out Wildstar, just as they do with every new MMORPG, and I hope some will transfer for good, but yeah, we'll have to wait a few months to see that I guess.