Do you overlords and creators of this beautiful world have any level generator? Something that allows you to change the tiles, say which units come, what levels they are? If you did that would speed up modding a lot.
Level generator
Unfortunately it’s currently all done by hand 
If we’d been smart we’d have made tools for this sort of thing, but we didn’t.
Seems the best games only have custom levels.
Hey! This game is awesome the way it is!
Wow this thread is kind of super old!
For what it’s worth you can make your own levels and campaigns now with mod support, and we should launch steam workshop integration under beta in a week or so, and then release it publicly soon after.