I think that package management systems are
1) Not perfect (at least I haven't run across one that is perfect).
2) The most important part of a distribution.
Right now, GSoC package management system proposal seem to fit into one of the following
categories:
1) Infrastructure to improve how developers maintain packages.
2) Usability improvements.
3) Clean up or introduction of a feature.
There are exceptions, such as a proposal to convert packaging formats.