Apparently Povetkin has to fight Wlad or else he gets stripped; the WBA is planning a purse bid for the fight.
I don't know if this applies to every Regular/Super, though. You know them sanctioning bodies.
I don't know. It does not look like it. I bet Trout would love a shot at super champ Floyd and Matthysse would love a shot at super champ Garcia but these fights are not happening and probably never will happen.