During YAPC::Europe in Birmingham I did a (rather short and un-hackish) hackathon. Slides are available here.
I added a few new metrics:
This resulted in quite some movement in the CPANTS game...
I've also changed the display of the author pages, optional metrics (is_prereq and has_example) are now visually seperated from the core metrics.
The site http://cpants.perl.org is still not very stable due to a Catalyst/DBIx::Class-Bug (or more likely a bug in my usage of them).
Oh, and if you want to join the fun and help a bit, here's a (probably incomplete) list of tasks: