Well at least the possibilities of procedural content seem to be near endless.
I've seen some awesome stuff from the guys at Introversion (the people behind Defcon, Darwinia and Uplink) purely based on procedural content for their next game (Subversion). (
http://www.introversion.co.uk/blog/ )
Games like Spore and Subversion with lots of procedurally generated content are really something I'm looking forward to,
Cheers