I’ve never been able to have sky-high GDP without huge immigration, even when I try to tamp down immigration by every means available. I wonder how you pulled that off.
Does GDP really increase unemployment? I’ve always had minimal unemployment whenever my GDP in the game was sky-high. I haven’t figured out as many of the calculations as I would like.
I agree with you about the environment. High GDP could potentially improve the environment, since environmentalism is an nth-order industrial good. People want to live in a nice environment. As wealth increases and more pressing needs (food, shelter, basic leisure) are satisfied, wealth becomes turned towards improving the environment in which people live. The effect of GDP on the environment should really depend on the popularity of environmentalism itself, since that will determine when the environment is “pressing enough” to spend money on. If environmentalism is unpopular, private environmental protection will be minimal, whereas private environmental destruction will be unchallenged. Tourism should be a factor as well, since tourism depends heavily on the environment. Even urban tourism is responsive to such things. Nobody wants to vacation in a dirty, reeking heavy industrial town.
CO2, on the other hand… It’s supposed to be a thorny issue. Carbon is so ubiquitous. There are plenty of non-tracked variables which will shift with GDP that will produce carbon. For instance, electrical consumption. Wealthier countries will consume more electricity. The more electricity that is consumed, the more carbon that will be produced. There is room to deepen the modelling here.
Perhaps you should look at the modding section to try out mods and/or install a few overrides into the game?