Hi,
I wonder: Is there an obligation to upload free images to Commons? You see, I have a argued that by opening the Commons project, you, the Foundation, asserted that all free images should be now uploaded to Commons, and *not* to Wikipeida. Others have argued that there has been no official statement, thus uploading free images that can and will be used in other projects can still be uploaded to Wikipedia.
IMHO, "banning" (not technically, but via a rule) uploading of free image to Wikipedia will encourge the use of Commons and of it's content.
Yoni