My patch to show the base classes of each class in Sphinx autodoc has been accepted.
I've updated our docs to use this feature (it requires adding the 'show-inheritance' option to the autodoc directives). This requires that everyone generating the docs does a "svn up" on Sphinx. Our documentation instructions already say to use SVN Sphinx, so this isn't really a new requirement, and hopefully before long this will be part of a Sphinx release.
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA