I'm playing as a Dvar promethean and I bought a small Vanguard settlement with influence and have developed it into a city. I can build the Vanguard specialist and skirmisher units, but when I build a elite military facility it doesn't allow me to build any elite Vanguard units in that city. Is this by design or maybe I haven't met certain requirements? Does my relationship with that race have something to do with it? I also have a Vanguard hero with troopers on the map so I thought their relationship with the Dvar would be higher than neutral. It happens every game so I'm wondering if it's a built in mechanic.