Nobody knows for sure, so I wouldn't say that with such strong conviction. You see, the good thing about Preferreds is that we have a Contract that lays out the terms explicitly. Damages is surely a possibility since there is a clear Breach of Contract, which Lamberth will likely determine at some point early next year, possibly sooner.
Back-dividends can't be ruled out 100% either. The Contract states that if a dividend is given to anyone, that Preferreds shares also get their dividend. Remind me again who's been getting a dividend for the last ~6 years? Oh right, the "Sr. Preferred" which means the Jr. Preferreds should have also been given theirs. So, back-dividends isn't outside the realm of possibility since dividends were being paid, albeit to one class -- a class of shares that never existed before the Conservatorships.
As I started with, nobody knows for sure. But I can guarantee you the Jr. Preferred Shareholders will surely see something before the Commons see anything. Let's leave it at that.