According to Picard, a good first Officer is someone who tells you that you are a wrong son of a bitch who then confines you to quarters until you see reason... And that is not Chakotay.
Worf tried that with Data and data threatened to demote him and tap Geordi up to bat.
Riker tried that with Jellico and he got benched.
Max Burke tried that with Ransom who bent over and touched the back of his ankles prepared to be taken.
Miles towed the line fine when Captain Dee was in Charge, it was her 2nd officer who was rumbling about a mutiny... of course... Did it seem like Miles was first officer when Ensign Ro clearly out ranked him? That's cold. No wonder she was spoiling for a fight.
Who was Bev's first officer in Descent?