personally I think there should be a doctrine of first sale, where if it can be shown to an arbitrator(note not a court) that party B is receiving monetary benefit from works somehow derived from the works of party A, then party A has the right to receive a percentage, chosen by the arbitrator, or the monies earned by party B. Then do away with older copyright, in other words, you can make a porno film of mickey and minnie and Disney can't stop you, they can just get a share of your profits.
Aside from that, I wonder if the scientologists will go after the wayback machine and if they do, what then?!