(I thought we were on chapter 1035, we didn't knew about the Kuzan WCI invasion back then iirc)
anyway ye, Kat will become a leader of a new pirate crew, maybe some "Charlotte Family Pirates" type of thing, a budget version of the Big Mom pirates.
wonder if King does something similair, or he becomes a soloplayer after the next impel down breakout
I also wonder if King's wing will recover in future, Zoro really did some on King