@Rafał Perkowski: Bug-free? Guilds come to mind. Plus, no non-trivial software is bug-free.
And yeah, it's a forced beta, but so was the original one. Valve doesn't want to assume the cost of maintaining two different software products that directly compete with each other.
Well, it's a beta. I think what you're not expecting is to be back in beta when the game was released over 2 years ago (in the last patch before TI3 I think)