Wikiversity would be a good place for a workspace - but I'm not sure if Felipe was thinking of something more advanced (ie with wiki and other knowledge base features) as a "one stop shop".
Cormac
I agree with Phoebe and Cormac, Wikiversity could be a good place to start. But, as Cormac says, I'm thinking about a more complete solution, something like a "research planet", or more seriously, a research virtual community.
Besides the useful tools for searching through bibliography, there could be repositories with graphs, analyses, results, maybe even some databases with useful info for research about Wikipedia, helping other people to avoid starting from zero.
We
could also have a forge (including SVN repositories for code projects, associated mailing lists, etc; the typical refinements) to develop research tools for Wikipedia, and also to create development/user/researcher communities around those projects.
Along with these benefits, (and sorry for being repetitive) the most important advantage in my view would be to have a central, clear and bidirectional communication point between Wikimedia Foundation and other research communities all over the world.
Of course, I also agree with Alain in that we should sindicate/mashup/collaborate with other wiki research spaces, starting with WikiSym. Perhaps, I'm proposing an augmented WikiForum, much in the same line, but including other cool enhancements.
We at URJC are involved in a very similar experience, creating a complete info repository for the European Open Source Observatory. IMHO, we should commit to a complete repository for researchers on Wikipedia,
for them to collaborate effectively. Potential sinergies are simply too good to reject the opportunity.
Bests,
Felipe.