I gotta say, I don't know WHAT the Mobi developers are thinking! No support for multi-level lists? really? How is one to do an outline, or a detailed table of contents, etc.? I've scoured the interwebz and found not a single solution. Mine is the first I've seen.
If anybody has a different solution, PLEASE post it! Even if it doesn't work as well. I'd love to see it.