It's not so much a matter of how easy it is, more along how long it would take. Depending on how big you guys would want it. Plus if it turns out I CAN easily create it in the editor that'd be better but I looked around and I'm 99% sure I can't.
And if you guys are willing to make a gigantic deathstar you can start a smaller one here for practice and maybe that'll be the next map. Space build...which now that I think about it will be just like the last map we had that was super big.
I got a good looking sand dune map we may try next but it's all up to you bros.