It was fun. I found the tau underwhelming a bit. I think they'll end up being strong early-mid game, but lack of any relic requiring unit might lend them to being easier to pop late game (especially with a certain race having rediculous Assault Terminator spam...er-herm). It's hard to tell, though, with the best stuff obviously being left out until retail. Those stealth suits mean people are going to *need* their commanders out early now, though, which is going to lead to some seriously altered build orders and strategies for some races. They didn't seem to do much damage though, so maybe I'm over estimating it. Seems like a poor choice, but given the power of the firewarrior squads the only logical one.
Bloody hell they're going to be tough when all I have is Guardsmen and Hellhounds/sents! Guess I'll have to use basilisks to disrupt them...but what is going to keep the damned Kroot busy? Yargh!