After many months of work, I finally have something I'm proud to share with everyone. It's actually two projects: Archipelago and Asunder. The first, Archipelago, is a collection of BO3's that allow you to generate floating islands. The other, Asunder, is a shattered world created from Biome Bundle using Archipelago.
They're not entirely new as I had uploaded them to GitHub a while ago, but I just finished a major overhaul of both projects, and I'm very satisfied with the results. Feel free to use them both as you please. I tried to add as much information as possible to their README files, but if you've read over these and still have problems putting them to use, I may be able to help you out.
Of course a picture is worth a thousand words, so below is a little preview. Check out the whole album if you want to see more.