So in 2013 the families of the original creators get the rights to Superman? Yeah? Really? Seriously? Lets hold the phone here and ask some questions.
1. Do they get all the rights? As in trademarks?
2. Do they get the rights of everything that the original creators didn't create thats involved in Superman? For example Brianiac was created by Otto Binder and Al pastino. Not Siegel and Shuster. Or the current incarnation of the S symbol which differs greatly from the one they used. Elements of the origin and supporting cast. Did you know that Kryptonite and the Daily Planet were not created by thsoe two.
3. What would they be able to do with a character that resembles the popular incarnation of the character? How would they sell it without many of the important aspects?
Yeah... 2013 the families are going to just sell it back to DC/WB. Thats just how it has to work.