Extends the grass growth on the side of blocks so that rolling hills show less exposed bare dirt. Also does the same for snow, forest litter, moss, etc.
This improves screenshots in a similar fashion to Landscape redo but doesn't alter nodes.
Removes a piece of Minecraft's style legacy that Notch might not have gotten right in 2009. Currently it has Minetest-Game, MineClone 2, and Ethereal textures in it, but others could be added.
Links:
MineClone 2 Mushroom biome: