There's no such thing as hardcoded game logic when it comes to Unity games. See modding in Kerbal Space Program or Subnautica. So it's definitely possible
But CW being my first game in this genre, I wouldn't now what to change to make it more authentic. I guess I should pick up SC/DW while they are on sale.
I think I will start with some basic QOL tweaks like the minimap and tactical map keeping their positons separately. Always annoys me when I switch and my minimap position is messed up.
Any specific changes you already have in mind?