That does sound like a good idea. Something like a maemo.org/diablo could be the 'homepage' for Diablo users and all relevant links (wiki and not) gathered on one page.
Maybe even more importantly a 'What's New'-section where items like the SSU, etc could be posted....and then that page could be used by the tableteer app

Since it wouldn't be a static page - and not a wiki - there would be the issue about who makes the updates, how is content selected, maintained, etc.