As Hayastan I can't build the highest level of local military buildings (important because they often give the only troops you'd want) unless I have a Philhellenic Satrapy. This requires a minor Hellenistic settlement. So I am now destroying any satrapies, building philhellenic to access these, then building satrapies again... But if you have a Hellenistic metropolis (Antioch) you can't build
any level of local military colony
. As an eastern faction you are reliant on having Greek populations to get non-Greek troops... None of this is making any sense to me, if I am missing something please point it out.