Mingo's title was revoked by the time Fujitora was sent, his orders were to sit and observe before taking action.
Sakazuki would have to spend hours trying to nail this infromation in Aramaki's head
Meeting the Straw hats in the casino
Issho didn't ignore the SHs out of kindness, it was in fact orders by Akainu
But if Aramaki understood "not doing any funny business" as clearance to fight the alliance then he's gonna bodybag them
Confronting Trafalgar Law on Greenbit
He would completely immobilize him by sucking away his juices
Fighting Sabo
Impel Down level 6
The Birdcage & Doflamingo’s rampage
He would take care of Luffy and threaten Doffy to remove the birdcage
The Straw Hat Pirates and co. Escaping
Bodybag them