recently a bug against powerpc-utils  has been filed as a result of
the modularity work to minimize the base runtime environment. This lead
us to think about the install-time and run-time dependencies of
architecture specific packages as a whole. There is now a wiki page 
to collect the information, before we make changes in Fedora - in the
lorax templates for the installer, in the comps file for "installed by
default", etc. The result should be a list of packages and package
changes to allow the minimal image to boot and a definition of
"architecture add-on module" with with management, monitoring, etc.
Feel free to edit the wiki or post your results to the list.