Just like Joyboy, I really don't care what Rocks did in the past. The guy is dead already and we knew he was a high top tier after we learn Roger and Garp were neccesary to beat him.
And BB is still a bum. Bb could be Rocks son, Rocks could've been the previous user of the darkness fruit, idc, BB is still a bum.
Let's hope there another CURRENT agenda that can benefit here.