I would love to have a terrain preview on the game creation screen when I'm using a seed or map exchange string. It would make the process of getting the settings you want much simpler. As I imagine it, it would basically just be a minimap of the initial spawned chunks. I realize this would involve spinning up a bunch of code much earlier in the flow than present, but I think it would be a huge QoL improvement (especially for testing terrain gen changes

Actually, now that I think about it a bit more, I think I've been too cautious. This would work well for random seeds too. Just hide it behind a checkbox for people who don't want spoilers. Right now it's nothing but a time sink to find a seed you want.