@Chrissant 짜노, sadly i am no longer very active but maybe i'll find some time to do a stand alone unit stacking mod. you could combine 2 mods (any mod that changes the unit stacking value to 2 or higher and a mod that creates a visual icon mechanism for that) or create it yourself.

Could you separate this mod into modular pieces? Several players would simply want an updated unit stacking component and not the mountain changes and building changes which render this mod incompatible with a lot of popular overhauls.

I will create a city surrounded by mountains right away! :)