The creature stage felt like a collection of mini games. I wanted it to be a tale of survival, I wanted to be thrown into the wild and hunt or be hunted. Instead what I got was a stage where I was essentially forced to dance and sing my way through...

DANCE FOR YOUR MICROSCOPIC LIFE!!!
(just a little play on phrase of what someone said during a live video feed of the cell phase, except it was run instead of dance).
I cannot see why Spore didn't stick to a realistic simulation of a creature.and evolution traits and actions that mattered. It would have been more rewarding even for children
to go back and think what their creatures needed to be stronger and survive.
The Spore we got is bubblegum, The spore that was envisioned and hinted at could have been awesome.
I agree. 3 1/2 years ago, I would've rated this game a 10 in terms of how much I want it. It's been decreasing steadily (about 1 point a year) since. Anyway, from what I've seen in live video feeds of the game (I've watched maybe 10+ hours total)...
Cell - Seems to be the most fun stage for some reason. Although, I wouldn't have put a limitation on carnivore/omnivore/herbivore. For me, that really takes out 2/3rds of the experimentation in creature (i.e., switching from carnivore to herbivore - and being an omnivore at first doesn't count).
Creature - It just doesn't quite seem like what Wil showed us. Playing peaceful seems a bit boring (I think I was starting to fall asleep watching someone play peacefully by charming and dancing). If it were me, I would have kept in how creature size and limb placement affect the creature. I was hoping this would be included for experimentation. Now, a top-heavy 1-legged creature does just as well as a normal 4 legged creature. I don't think scaled mouths, limbs, wings, etc. do anything special, either. (i.e., a small carnivore mouth should not be as powerful as the same mouth that's scaled to the max). Creatures with 1 wing shouldn't even be able to fly, either.
Tribe/Civ - The two almost seemed similar in a way (I didn't get to see much of Tribal). I think it this could have been better had it been a bit more like Starcraft instead of Civ - rather, more Starcraft elements. Starcraft does well on having the player collect things (gas, basic mineral) on a small scale.
Space - I was really hoping this would be a sandbox more than it seemed like a Galatic Trade Wars game. Maybe I was hoping for the days of SimLife, SimEarth, and even SimCity. It seems Maxis has gone the path of simplicity with Sims. Now, instead of experimenting with creatures on a new planet, a planet feels more like walking through a zoo. There's no fun or challenge seeing if my top-heavy herbivore creature (maybe with some defensive weaponry) can outrun a small, sleak carnivore.
I just wished that I could play SimLife and SimEarth on a WinXP system (and have them use the several gigs of RAM max -- which would make the Desert to Jungle scenario (mainly, the seasonal timer) in SimEarth go really fast!

).