Biome Positioning

I think it would make exploration in Minecraft a lot more logical if biomes only appeared next to biomes that would have a similar ‘temperature’ in real life. What I mean by this is that desert or Mesa biomes should not be positioned next to snowy biomes or mountains.

I also think that ‘hot’ biomes should only appear below a certain height. This would help to avoid having deserts on top of mountains, for example, which I wouldn’t really like to find. Also, all biomes above a certain height should be snowy (I don’t know if this already exists or if I’m just being stupid, but if it isn’t it should be).