Hello, I'm fan of Spore.
As far as I know there are four cut stages in Spore (Molecualr, Aquatic, City and Teraforming Stage)
I think bringing at least one of them could be great mod.
If you consider starting that as project I think many fans including would be happy.
Thanks.
You can contact at this e-mail --> nikola2005kovacevic@hotmail.com