I think the whole costs/income structure needs tweaking.
It doesn't seem quite right at the moment.
Playing as the Patriots I am getting around 10 income per turn, my upkeep every other turn is about 14ish.
I haven't bought any new units, just trying to get my existing units up to full strength. I am on turn 11 and I still have a need for 11 replacement elements.
But the cost of units versus how much replacements are looks wrong as well. It costs 2RP for a single replacement element, yet I can buy a new 2 or 3 element unit for only 1RP. The gamey thing to do would be buy the new units as soon as they become available and disband the existing understrength units when you can't afford to pay for their maintenance.
I know money is meant to be tight for the Patriots, but this just seems like it needs changing a bit. I think cost of new units should be increased and the cost of replacement elements be reduced.