I'd agree with most of what is said here.
I think that there need to be more government specific buildings and units, and with more buildings I'd say that there should be one more building space.
I also agree with firetail that there should be main building upgrades. I also think that there should be general unit and vehicle upgrades. All upgrades would be managed through the main buildng without having to build another separate upgrade building.
I think that the influence factor should be better incorporated, maybe there should be really strong units you can make that would cost 25 influence, along with other resources.