Honchkrow: Having sucker punch and night slash is generally considered a waste of a moveslot. Replace night slash with pursuit to reliably defeat Pokemon at low HP and get moxie boosts.
Hydreigon: Focus blast doesn't cover many threats. Unless you have something specific in mind, replace it with flash cannon.
Drapion: Most of the rest of your team is weak to fairy. Replace earthquake with poison jab for STAB and coverage.
Bisharp: Replace inner focus with defiant in case the opponent has defog or intimidate. Because knock off is powered up while knocking off an item, it will deal more damage than night slash for a few turns. Replace night slash with knock off. X-scissor doesn't cover many threats. Unless you have something specific in mind, replace it with psycho cut.
Mandibuzz: It already has a dark attack, so replace knock off with brave bird. Replace protect with roost to heal.