Random speculation - After Mamas "treasure" gets destroyed and undoubtedly goes on a rampage do you think she will kill/attack/beat down some of her children like what she done in the beginning of the arc, before they shoot her that is ?
i dont know. i think that first we should know what inside the treasure that bm get from underwold boss and especially 'tamatebako' box from fishman island. i get feeling one of leaders from underworld will betrayed bm and give 'suprised' box to her.. and make bm rampage and uncontrollable. that make luffy and capone have chance to beat down bm in the end, i dont think bm will die in this arc. that's all.