My idea is to have different types of caves. That's why I collect different cave mods. I don't want to have them at the same time at the same place. I think about something like cave biomes. And I don't mean stone type or decoration. I mean the cave structure.
I have currently 4 different cave mods. The v6 caves, intersecting light, the fun caves (thanks to duane for these three mods) and the vine like caves from the experimental mapgen
I think that I use a 3d noise and depending to the noise value I generate one of the four cave types.
What do you think about this idea?