Ok this is just a suggetion for hegemony gold
Maybe a secondary income would be nice, that will act as secondary gold.
It will cover other expences apart from army, like upgrading roads, or upgrading mines to fit more workers..etc....little things that can be upgraded and have nothing to do with the army...little upgades you might add in the future to make the game more rich..!!
The limit could be like...1/8 of primary gold.
So if primary gold is 2000
secondary is 250!!