ah, so it's a design choice to reduce the two biomes to almost nothing. As long as I understand that I can now reason as to why you do not allow percentage sizes for the four biomes. It just seems uneven to me to only have two and not four, they are part of the game.
I understand why you do not like them but I would have a defined larger area of each that could be driven through and visited than a small blip of an burned or wasteland than only seems a few metres in size, just seems strange. I'm not thinking of taking up residence, altho some people actually do that...!
Thanks