I was thinking about a civil war challenge

How bout a challenge where you have the majority of the world, with leaving room to expand a bit more....with only one player left, and he is a blob....a very large one at that...and you have to wittle them down slowly...that could be a hard challenge, or possibly easy, depending on how big the blob is...

just an idea

and the vise versa would be a cool one, where you have a blob and must expand against a player who controls the rest of the world