Wouldn't want to turn this into an "us against them" (those who think the game is PERFECT as is and those of us who think it needs improvement) -- I don't think the game sucks, but I'm a little more on the side of 'it lacks something' -- I agree with Suzi -- once one generation has passed, there really isn't anything too exciting to look forward to. The upgrades don't cost $60K @ $15K each it's $45K - I got them all in Gen2 and now it's just an ant farm.
I have a few upgrades to buy (pinball and Treadmill) but as I've read on the threads they don't affect the actual game play that much...it's simply a decoration.
It's a great game, I give it a healthy B -- but I think a lot of us see greater potential for future incarnations, hoping there is VF2.
Love, hugs and kisses