There are a few bugs, and a handful of graphical tweaks they have yet to address, but "early beta"? Come on... you're either full of it, or you don't know what you're talking about.
I was in the WoW "early beta", when the level cap was 15 and a Cross Roads raid would routinely crash the server. I was also there for launch, and saw a lot of unaddressed issues go live... this is how the MMO world works: launch now, fix later. Indeed, this is seemingly how the entire video game industry works these days, given the ability of most consumers to patch via always-on internet connections.