Oh and just one more thing. If you really stick to the skyblock companion mod (which I would admire) I would be really interested in crazily rare floating islands. Maybe a limited total number of them with a minimum distance from spawn so raiding it wouldn't be the first thing to do. I would love to see a world beyond skyblock with its minimalistic style. And that's why I like your mod because it don't spoil it with unnecessary stuffs but extend it. So keep up the good work.
I know this is a skyblock companion mod but if some one does not want a sky block you could add the ability to do these islands in a water world or lush forested valleys in a wasteland like world as well.
just a though but The wasteland could be made up of sand or some other dry and barren like block if a bioms mod is added.