So I've heard mention that Elemental will work similar to Spore, in that users will be able to upload their own custom creations to the game.
I'm a little confused here. Spore worked because the Universe was persistent for all players. A player's creation got uploaded to a master server, where it was dispersed to each user's computer.
A Turn-Based Strategy doesn't work like this. Players usually connect to each other via LAN or VIA IP. There is no "master server". Also, if there was a master server world to connect to (which I have heard mention of), how do thousands of players upload their creations to a single persistent map? Wouldn't it get crowed REALLY fast?
Or are we talking about many, many game worlds playing on a large server where players can join one of their choosing? If this is the case, that's not really like Spore at all.
Now here's my suggestion:
I think it would be cool if there was a way to build a massive persistent map, divided up into regions. Each region would be "battleground" where players could connect to compete in a persistent, ongoing war. The entire "world/server" would share all the same races, items, etc, based on what users would upload, but regions would be split up into battlegrounds, on a smaller scale. So players could upload their own maps, which would turn into new "battlegrounds", adding a new region to the world.