I don't know about that, my brother and I play a bit of the open beta along side 1.2.3 and ECX, we favor it for the mobility improvements, though basic melee gets tedious rather fast, and there's no beam struggles, the over-all smoothness of open beta is enough to get me psyched! Glitches are prevalent around just about every corner, but I stand by it being fun.
PS: I think during the beta tests, everyone just wanted the finished product and were upset they didn't get it. *shrug* Then I wasn't there for that so I cant say for sure.