Quote:
Well, having an "Ultimate" unit souds like a pretty nifty idea, Blizzard couldn't really pull it off with even the protoss, so that might put them off any other unique mobs.
Another important thing to note is the fact that Zerg aren't the "ultimate" type of race. They're more about "We are the Swarm" and dime-a-dozen masses of icky creatures eating you whole... no?
they can mass , but in the early game it sucks (unless it's ZvZ), in the mid game is even worst, and in the late game is when zerg starts to shine a little bit.