Orphan Works Trolls?

Do you think we'll start to see "orphan works trolls" that examine commercially successful orphan works (or their derivatives), try go find the copyright holders and get rights assigned and then sue so that they can make money? Hmmmmm...

Joe Gratz cuts right to the chase and posts the LoC's legislative proposal to solve the orphan works problem. I don't have time to read the 100+ page report, but would like to see a concise discussion of what the LoC found compelling and what they wrote off.