GDP maximum limit and Minorities

Whenever I play Democracy 3, it always annoys me that GDP has a miximum limit. Surely it should be able to have unlimited growth instead hit the top of a graph? Will this be fixed in Democracy 4? Because i’m definitely not buying it if it has this annoying feature in it…

Secondly, minorities as a percentage of the population can get very very high even with extremely strict immigration rules. Will this also be sorted out in Democracy 4?

Thank you