Perhaps, this mod would be a nice pair with this https://mods.factorio.com/mod/corruption/discussion (I consider combination with this mod)

Does the unit just take your building? How does it work?

I did think about mind-control abilities for protoss' dark archon. That may really mess up your base defense because mind-controlled building won't be automatically replaceable by robots. You would have to replace it manually. That was the reason I didn't include it.

The concept and further ideas under development. Currently, that certain mod just transfers most buildings to the enemy force. Further realization might be messy due to events and filters. I might add more aftermath moments. For example: destroyed buildings will be rebuilt by enemies, after N minutes near buildings will be captured, transformed with the captured territory for enemies.

For me, it seems a pretty idea to change the appearance of enemies and add more features. Because "robots", "humans" etc can affect players, buildings etc more than biters in theory.