Kane's Wrath Unofficial Big Bang Patch 1.04 is a mod that adds few new things and tries to balances the game a bit more from my and the community ideas while at the same time also tries to save the most import ingredient at bay: The "fun".
All enginners in the game can now repair neutral structures, cause why not?
You can thank my friend for keep nagging me to add this ability (I did promised him few years ago so now I don't need to feel guilty anymore xD)
(Still not sure about the price though)
Can you make the price depend on the damage value for example if the neutral garrison is 50% health the price will be 500 and if it is 70% health than the price will be 300
I don't know if the engine will let me do it but I'll check if it possible, EA sort of limited our hands with the sage engine, and aside from somehow set some code in every neutral structure in the game (which I rather avoid) I don't sure if there's any easier way around it xD