Space territory unit

[W1zard]

To build a large space city for an org it would require massive amount of space cores to restrict other random ppl of placing a core and building a cube in between their assets.

 

And if there will be some defense mechanics like planned with regular TUs (only the most outer ones can be attacked) this will create an opportunity for big orgs to build a somewhat-safe trade/military/other outposts in the wild space

[Penwith]

an easier way to handle the problem your "solution" attempts to resolve is simply restricting non-friendly placement of space cores within a spherical distance of one already placed. So, only friendly cores (from same or associated orgs) could be placed in proximity.