Willie would like blame the Rosatos for anything, including the Lindbergh kidnapping.
A dark-horse candidate for killing Pete would be Bussetta, who we see elsewhere trying to smother Roth with a pillow. That could look like a heart attack in Pete's sleep. This would require Michael to have motive to get Pete out of the way, of course.
Pete, your reference to Michael's motivation if he was behind Clemenza's murder is important and unanswerable. We don't have a reliable timeline. Nevertheless, when Clemenza died (murdered or not) , it looks like Frankie took over. Frankie seems like a real, old-time Mafioso who followed the rules (like Dellacroce) and would not murder Clemenza to take over the family. Maybe it was the Rosatos afterall. Since they seem to be impersonations of the Gallos, would the Gallos have murdered Profaci if they had the opportunity?
