It is currently possible to add an URL while adding a media object to an individual.
The problem (as I see it) is that that URL will become the address of the media object and not a downloaded version.
I would very much like, that you can:
* indicate an URL to a picture
* download that picture to the server
* add the local server address instead of the URL
* add the original URL to some information field, so the source URL is kept intact