Quote Originally Posted by Zezlar View Post
Why not just do World A + World B = World C but also offer the choice to leave the world if you wish. You have to register beforehand anyways.

There's no reason why there can't be a medium here.
That's true. That way, people who haven't registered and will not til 2.0 can sign in and are guaranteed to see some friendly and known faces from the time they left.