Minecraft should really add a karst biome!

So basically, karst in real life is a very interesting terrain of geological formations like caves, pits, underground rivers and lakes, sinkholes, canyons, wells and mountains. I think traversing this biome would be so fun and adventurous. This biome could also bring in the limestone block which could be a great building material which could be used to replicate mediteranian style builds and houses. I really hope this biome gets added someday and that you like the idea too!