A proposed redesign for use.perl.org, created by Andy Wardley the last time this discussion happened:
A few different people tried to contact pudge with no response, so plans/hopes to improve the looks of use.perl were abandoned.
Trying to do something useful with the wave of enthusiasm for Perl websitey things, at Digital Craftsmen we built this:
Which obviously uses a modified version of Andy's design. Meanwhile, Andy was working on a redesign of the London.pm website:
Which also has the 'glass onion' theme/style going on.
Back at Digital Craftsmen, we started looking at adapting the first design for use on www.perl.org instead:
Unfortunately after discovering that we'd need an Apache 1.3 environment to host the combust CMS that perl.org runs on, we lost momentum on implementation of that idea. It'd be nice to pick it up again, but currently client work takes priority. As mentioned previously, it's also a bit tricky to find an entire spare server so that we can downgrade it enough that it will run combust - an example of how the technology used on the back-end can sometimes influence the availability of design/implementation efforts for the front-end.
So... there have been some efforts recently to try to generate a 'suite' of sites with a co-ordinated look-and-feel, but not a great deal of concrete progress, particularly where the core sites are involved. If there's a willingness to make more progress now, then people will probably step up to do the work.
As a footnote, last I heard dev.perl.org was very open to suggestions and help in improving the look and feel of that site, so that might be a good staging ground for any improvements eventually intended for www.perl.org