Once Kaido and Big Mom fall, Akainu will be on anyone's ass who tries to take their spot. Will probably make more HQ's in NW.
The exception will be the Strawhat crew since they'll be too strong to bother with. Luffy and Zoro will be solid top tiers and the crew/grand fleet will be a force not to take lightly.
I'm all for Akainu fisting Kidd. Hopefully Killer escapes without any serious injury.