@solloxr
I have your answer! (I think)
According to CWIR's OutpostCV.xml, to build an Outpost the following Conditions Apply (the code being summed up by the quoted comment):
<!-- conditions: unique owner of military l or xl in a zone, no enemy stations or stronghold present, zone ownership must be enemy, own or null -->
Obviously, BR & Rubini did not want the player to build an outpost in lets say: Gushing Spring or Darned Hot Air and thus 'steal' ownership from a friendly faction. That makes sense.
However, with the Hiigaran Crossroads mod, Hithlim Ice Fields starts with the ownership of the zone set to the "Argon Government", same with: Kadiir Nebula (Aquarius Corp), Manaan Culture (Beryll), & Soban Conquest (Aquarius Corp) - just to name a few.
In your picture example, Hithlim Ice Fields is currently owned by Ren Otani - because you own the station that is pictured there in green on the map; but the zone
starts the game being owned by the Argon Government
and the Argon Government is
not the player's
enemy (nor does the zone start un-owned i.e. "null"), thus, the zone itself does
not meet the conditions to build an Outpost CV.
I know BR has stated that in future versions, we may be able to buy/sell zone ownership back-and-forth.
Edit: 9/17/2015 07:06 am GMT
So, the proper question that needs to be answered is: "Does a zone's
initial ownership factor into CWIR's determination of building a Outpost CV?"
Ex: Canterra owns Gushing Spring, if the Reivers take it: they build an Outpost and transfers ownership to the Reivers (they being an enemy of Canterra, thus fulfilling the pre-reqs); but if the Player (presuming is not an enemy of Canterra) takes Gushing Spring from the Reivers, can he/she then build an Outpost CV within that zone?