Production schedules? What happened to the "It's done when it's done" approach?
Yeah, and then your paying all these blizzard game developers/artists, etc etc $20,000 each in salary per Month this adds up very fast even for Blizzard. Sure a few different looking mobs would be cool, but the few weeks they take to do that would cost them alot of money. These guys are getting paying triple digits.
They have to have a timeline, if they wanted to wait til it was completely perfect blizzard would go broke.