Biomes don't always blend together well where disparate biome types border each other.

This isn't exactly a bug, so I wish I could label this as something other than a bug Issue Type. But I just noticed where a forest biome is adjacent to a mesa biome, the "base" ground level changes abruptly and you need to build stairs or ladders to cross between biomes. Also, mountains and lakes end abruptly causing vast smooth walls and ruler-straight shores at the edge of the biome, which is ugly.