Also, you've already established Multimind as the antagonist. Doesn't that take away from the point of having a secret antagonist? Nothing against Multimind at all, but knowing who the antagonist is ahead of time biases the players and makes it more difficult to feign surprise or make bad decisions (trusting the antagonist). Sure it would be awesome to ally with the bad guy without knowing it and get backstabbed later, but if I already know he's bad, it loses the element of surprise.

Or maybe that's just me.