A company founded by the BattleTech inventor is going to do a new MechWarrior and thought they'd better get some first-hand experience with a child's game before getting onto the real thing?
I couldn't be happier.
There's a lot to be learned even with a child's game. It's still a game containing most of the stuff regular games do.
@Sparky: Guess why it's called beta. You've got 3 trials.

But that's a good example as to why there was no MWLL beta up until now: Though it's labeled BETA some people still expect a full-fledged, running game.