Evolution should have featured (more). IMO, there should be very few creatures plugged straight into the game (at least, not on your home planet). Things should start off simple like your cell/ceature, and evolve according to certain logical rules (certain responses to what is causing them most injury/deaths). The user content can act as 'targets' which creatures evolve
towards, but the end result is something cross-bred with the conditions on your own planet, which can then be uploaded and shared again... Yes, the game should generate its own creatures! With much branching out in different directions, as well as mass extinctions...
I'd tolerate less freedom in designing creatures, in order to see this happen - a world that actually evolves as you play. Why not have the land surface gradually shifting, rising and falling too? The technology already exists in the game engine, as seen in the terraforming tools in the space age. All basic 'Parts' should be available, and you can buy more advanced parts in your next generation, instead of randomly searching for mystical skeletons. And needless to say, species should have populations that rise and fall also, sometimes swarming in huge numbers, and be able to migrate across the planet. And when you lay an egg, it should just be for increasing population. Only if you have gained enough new DNA and if enough time has passed should you be able to click on your egg to evolve the next generation. Maybe youd be searching for a mate with some slight mutation youd want for your offspring
So many
what ifs!!!
Anyways, my actual main gripe is with the three stages after the creature phase. Today I had an epic session of installing and playing some old games - Rise of Nations, Ground Control II,
Startopia, Warlords III and Galactic Civilizations #1. Startopia and GC2 in particular had really nice 3D graphics without being too demanding on hardware (a breeze on my new PC). They really put the civ stage in Spore to shame in terms of detail on screen. And in terms of gameplay, I'm also thinking back to games that were out
10 years ago like Settlers III and
Populous: The Beginning (one of my favourite games of all, with people living on 3D spherical planets, just a shame it doesn't seem to work on any OS above Windows '98

). And nearly 20 years ago (when I was very little), those early Amiga strategy games like the Populous I, Warmonger and
Mega Lo Mania, which had simplicity (out of necessity) but depth and replayability too.
From creatures to space, there's just so much out there they could have copied from - game concepts that have already been thought out and tested for decades - while still kept things relatively simple. Although I do enjoy Spore, it's really a shame to think what could have been. As other's have said, its bitter-sweet.
/rant