Of course you can create them youself but it's far from trivial;)

To be honest we havn't had that much progress lately but the GC maps are still in the works.

So i take it, not doable for a noob like me who has no Idea about creating Maps?
Ah thats fair enoug! Just thought it would be cool, a One Planet Start Map and just conquering the galaxy as Lanteans... sure its not Canon, but with your awesome units... that would be so cool! :D

you could use pre-existing maps

and just scatter the planets around