I'm glad you like the game! Thanks for spending so much time playing & putting it through its paces.
I try very hard to not have to clear out the creature servers (it's only happened twice over the last four years) but sometimes there's no avoiding it. Best I can do is to post a warning to the wicklog before it happens
Adding computer-led evolution has been suggested before but is definitely out-of-scope. I'm more interested in seeing what humans build than what computers build, and the game is already dangerously close to being a fancy fishbowl screensaver. Removing the creature-building wouldn't leave people with much to do, would it? :p
I agree that having a more zoomed-out view of seeing creatures interact (maybe in some kind of map editor?) would be a lot of fun. Same for race & battle modes. Someday, someday...