My Wag is that people who bought the old common and now find out about the 75/25 split til the end, want to reverse history in their dream. Or they didn't buy enough of the old stock to have enough escrow markers and now want WMI assets to go into WMIH. Or they cannot afford WMIH shares and now want free shares via an S4V.
Unfortunately, daydreaming does not usually produce the outcome that one wants.