I always thought oda had wrote himself into bit of a corner with having Bigu mam on the roof, he couldn't have her under the dome because the alliance wouldn't be able to manage her but having her on the roof, well the 5 supernova couldn't take down 2 yonko at once
then their fight started and to me she's been getting in the way constantly jumping in, so i'm glad she's out of the way, 5v1 will make it a far more interesting fight, suppose it helped that the island was floating and moving when they pushed her off
cant for the life of me work out what oda's bigger picture for big mam is if she isnt going down this arc, it cant be as simple as having her head to elbaf, there must be more to having her be involved in this arc