As the title says, in a custom settings world, does more/less/no trees affect gem trees?
It might. Good question!
Yes, just like changing sky island spawn rates.
I suspect that it doesn’t - since you can choose no trees except gem trees - but I don’t have any hard data to back that up… I’d like to see a comparison of worlds with different gem tree settings, maybe I’ll have time to fully explore a couple of 1/4x worlds this week.
I’ll ask, but I doubt it. The sky islands frequency is the one I’d expect to make a difference. Gem trees aren’t actually trees, as far as I know.