I think the biggest problem is the struggle to maintain some historic accuracy while at the same time trying to make the gameplay work for countries that aren't GP's. Colonization should in theory only be left to the usual suspects, but that wouldn't be fun should you decide to play as any other nation, would it?
Right now, every time I start a new game either one of two things happens. Either nobody colonizes Indonesia, Japan or the Pacific for decades or France, Russia and the UK are all over the place as soon as I unpause the game. Especially Hokkaido never gets to be Japanese with any other major power fighting over it. Sometimes I can even claim the entire region with Dai Nam. There is barely any middle ground.
Claiming colonies doesn't give any infamy and therefor makes it much more useful than waging war and therefor makes for a much better way of expansion. You can't trade land, you can't even really push for other countries claims or liberation unless it is part of a sway which only lets you offer them one county at a time. One part of the game and it's problems tie into another and there are a lot.
Right now, every time I start a new game either one of two things happens. Either nobody colonizes Indonesia, Japan or the Pacific for decades or France, Russia and the UK are all over the place as soon as I unpause the game. Especially Hokkaido never gets to be Japanese with any other major power fighting over it. Sometimes I can even claim the entire region with Dai Nam. There is barely any middle ground.
Claiming colonies doesn't give any infamy and therefor makes it much more useful than waging war and therefor makes for a much better way of expansion. You can't trade land, you can't even really push for other countries claims or liberation unless it is part of a sway which only lets you offer them one county at a time. One part of the game and it's problems tie into another and there are a lot.