How about more infested void tiles for the derelict, and more pristine derelict tiles for the void?

[AdunSaveMe]

There are a lot of tiles in the void and the derelict that are shared, but there's also quite a few that aren't. Some of these tiles are absolutely fantastic, and would look incredible if they had an alternate version. Making an opposite version of these would look great, and would add a lot of variety to these two tilesets.