I have been playing since it was released (not the collectors early release) and I have found it quite enjoyable. The main thing I have a problem with right now is the bazaar-only system. They really need to implement an auction house. I've left my game logged in overnight several times just to sell off some inventory, because the market wards just seem too cumbersome to actually use them. I'm sure my video card loves that... and high pop servers probably appreciate the associated lag of loading everyone's character model etc. Another thing they ought to do is give us recipe books. The crafting system is intricate enough without having to go to a 3rd party website to look up mats for everything you want to craft. Love how crafting damages your gear too.
I figure they have until WoW:Cataclysm comes out to sink or swim, at least for me.