User blog comment:WillofOP/Enel's Survival Game pt. 2: New World Edition/@comment-3181121-20110306173909

Well, Shanks said that if anybody wants to continue fighting they'd have to take it up with him and his crew, and I think if somebody had, like idk BB or one of the Vice-admirals Shanks probably would have stabbed them ^^

As for the Supernovas, I think we will see all of them again at some point. Oda wouldn't have gone through such trouble introducing them to only have them killed off after 1 or 2 appearances.