I wish community created content such as yours, could be included in official releases, assuming you approved it.
Ofcourse probably the two biggest contingency would be be releasing them under one of the open source licenses that granted
1. Permenent rights of use
2. Royality-free agreement
3. Credits somewhere
I think that would help anteworld progress quicker, so the community could create content (Models, textures, other import scripts)and outerra can focus on more tools/features that are very slowly coming along (more sandbox tools, basic multiplayer, biomes, ect.)
But great work kelvinr. New to the community and i'll be sure to keep checking your stuff out!