One thing I would like to discuss in this thread it the ecological system in Spore; How we think it might work, how we would like it to work.
It'd be really nice if the devs could look at these suggestions. [Hint

] Here are some ideas for things I would like to see:
-Evolution: The other species in the game shouldn't stay stagnant as you evolve! That makes no sense at all, does it? In real life, ALL creatures evolve, not just homonids. Besides, having to deal with the evolutions of other creatures makes the game deeper. Think about it: In the GDC 2005 Spore, we saw that Spider-Creature chase down the Willosaur. Luckily, the hoppers were slower then Willy, and got eaten instead. What would happen if hoppers got faster, or the Spider Creature? Or if an entirely new species evolved carnivorism and started hunting Willosaurs? It would result in the EVO stage being a constant evolutionary arms race: which is exactly what it the natural would is like!
-Extinction: If one particular species of plant or animal is predated upon too much, I want it to go extinct. It would be highly unrealistic to find some creature spawn out of nowhere after you ate/shot/captured the last of its kind 2 hours ago. Further, this would help support evolution. Without the extincted thing in the food chain, predators need to adapt for new prey, or other creatres can evolve into that former critter's ecological niche.
-Invasive Species: If I capture a few creatures from Planet A, and drop them in on Planet B, I want to see how Planet B adapts to these new critters. I want to see the
Aliens (

) multiply, diversify, evolve, and interact with the natives. Will they be immediately destroyed by the natives? Mesh nicely into the established ecosystem? Or even become the dominant species on that world? It'd be very fun to do this sort of thing. Or even make a critter from scratch and plop it down on a planet and see how the species does.
Well, that's all I can think of for now, but I'll probably add more as I think them up. What do YOU guys want to see, pertaining to Ecology in Spore?