Hopefully there will not be a need for many more features, the idea being to Keep It Simple. However there are a couple of things I can think of.
It would be nice if the XML could be processed into other formats, text output would be relatively easy to do in Python and will probably be my next task. It would also be possible to get PDF output, although that would probably have to be coded in Java as there I do not know of a Python PDF library.
The contents page could be improved - it would be nice to have bi-directional links to the sections (like the DocBook style docs have)
I can be reached at (spelled to avoid spam): murlen at users dot sourceforge dot net. This email address is also the probably the best way to report bugs, however the bug tracker on the SourceForge page can also be used