A big part of the political debate has to do with the lack of some sort of publicly searchable visual registry. Photographers, graphic artists, furniture, and pattern design makers have hard time being found with the current copyright registry–because it's basically descriptive text. Yep, it's that lame–imagine searching for an image by describing it with text.
So, politically, that's one thing we think an orphan works solution needs–a visual registry. We think it would solve a lot of the visual artists' problems and go a long way to unorphan works in the future.