I would like to kickstart the discussion to get a first for such a license - it could be called CC-BY-SA+ - written as soon as possible. :-) Perhaps we should have a dedicated mailing list where stakeholders from multiple projects can discuss it?
I agree with this 100%! It would quell the people who are worried about the open-season on image media, and it would give the text-contributions people more ease and freedom in releasing text.
--Andrew Whitworth