I have created a more detailed proposal on the Wikimedia Commons (shared media wiki):
http://meta.wikipedia.org/wiki/Wikimedia_Commons
I have added a mock-up of a redesigned upload form which addresses the copyright issue, IMHO in a smarter way than the simple multiline upload form that is currently active on test.wikipedia.org.
The page also includes an implementation strategy for single sign-on. If we implement the commons, that would also be the logical time to implement SSO, as the requirements are related and the Commons would obviously benefit from it.
I hope we can move forward with this, but I need volunteers: * people who are willing to help with the implementation * people who improve the proposal and related documents * people who spread the word about this proposal and get other people involved.
If you think you can do any of this, or anything else, please add your name in the "Who wants to help?" section. If I have to do it alone I'll do it, but in that case I won't do single sign-on and most of the advanced stuff that is discussed on the page.
If we do this together, I suggest adding the relevant changes to the MediaWiki roadmap for 1.4.
Regards,
Erik
wikitech-l@lists.wikimedia.org