Thank you for your encouragement
Yes , there will be specific resources to be collected in this zone (however, these resources and their use have yet to be created). These resources will be what will motivate the player to explore that zone. This could also be a good place to put some kinds of constructions to find.
There is progressive variations in the parameters of the generator. What the photos do not really show is that it is the same zone. This is also the reason why the islands are small, this is the way that zone ends up in the sky.
In fact, it is not currently a real "island zone" because they are not really far in the sky and that's why we'll made tiny islands.
We also thought about kinds of connections for travelling between the islands. But as we wanted this area to be dense and with a lot of tinny islands and caves, we stopped adding complexity on it because it would be too demanding on graphics cards.
Although, there will certainly be other zones where we'll have the opportunity to implement new things with this kind of algorithm with different settings, textures and options. Maybe a true "sky zone" you'll have to reach with an aircraft, lift or other means.
The Blackvoxel Team