Part of the issue is tied to wide vs tall imo.
There isn't enough of a price paid in wide expansion. The current economic mechanics make sense when imagining various "tall" great powers. Or say the great powers of an historic 17th century. They should all have access to valuable goods, be able to field powerful forces, and be competitive economically.
Expanding wide is too multiplicative. Even with autonomy, the player quickly benefits from the economic power of the added regions.
Maybe the current iteration is better in MP, where you have slower expansion and more competitive and tall nations.
PS I think ducat development tied investments would be a great addition.
There isn't enough of a price paid in wide expansion. The current economic mechanics make sense when imagining various "tall" great powers. Or say the great powers of an historic 17th century. They should all have access to valuable goods, be able to field powerful forces, and be competitive economically.
Expanding wide is too multiplicative. Even with autonomy, the player quickly benefits from the economic power of the added regions.
Maybe the current iteration is better in MP, where you have slower expansion and more competitive and tall nations.
PS I think ducat development tied investments would be a great addition.