Currently, you have to manually reclaim every destroyed building, unit pile, or destroyed metal extractor before you can rebuild in the area. It would be nice if you could simply set a build order, and then area is automatically reclaimed by the fabricator, and then the new extractor (or other building) is built on the location.
I would be surprised if this wasn't planned, more specifically that any corpses are reclaimed before building. I'd also like to see this extended to fabricators auto reclaiming enemy extractors (or capturing if that feature makes it in).
