User blog comment:Sithlord Andeddu/Big Mom's Fall/@comment-30127592-20171108170744

Considering how the supernovas thus far have continuously been wrecking or attempting to wreck the existing balance in the new world, i can definitely see BM's position among the Yonko being jeopardized following the current mess. Much hinges on the outcome of Luffy vs. Katakuri though: the entire crew of BM supposedly sees him as the ultimate, unbeatable paragon of the Charlotte Family, in opposition to BM's position as the psychotic matriarch that might as well eat them when she feels like it. He's supposedly the one guy they all trust in, and we've already seen the family working against itself, mostly to avoid BM's wrath. It may simply fall apart without Katakuri and the other commanders as the central figures keeping it all together. Smoothie would still be there, but since Oda unfortunately hasn't given her any relevance in the arc thus far, i'm losing hope of her getting any significant role in the story.

One way or another, the current chaos will definitely make BM's influence considerably weaker: they lost their surveillance system, their underworld contacts have either been killed or have seen her being beaten by two supernovas, the capital city is a complete mess, Jinbe and his forces defected, and they've lost a large amount of their forces to the Germa, the Firetank pirates, and the various battles with the Rescue team before all that, likely with more to follow. It wouldn't be a stretch to see some of her tributaries rebelling amidst this mess, further straining her forces. Put those forces without a levelheaded leader like Katakuri or Smoothie and instead with Peros' crazy antics, and they might just destroy themselves.

I'm not that certain about the other powers intervening in BM's loss, however. Kaido's got his eyes set on Luffy and his allies, and is likely already occupied with the pirate-samurai-mink-ninja alliance's arrival in Wano. BB is definitely an opportunist, but would have little to gain from attacking the weakened BM forces unless he's somehow learned of the Road Poneglyph in her possession. The marines seem the most likely candidates, but the gorosei have seen the chaos that happened last time a Yonko was beaten and still have agents on-site, so they may not want to stir the pot too much.