Hi CA, it could be nice to make the borders between provinces clearer (better defined), because it's sometimes hard to see them, especially in mountains/forest areas.
I think also about daltonian players for who it must be really uncomfortable.
Here you can see how borders are actually look :
And here you can see how it could look (taken from Sam8872 mod) :
It would be great to fix that in the Vanilla game in my opinion.
Thank you for reading this CA !