Married to Mickey for no reason, apart from the fact they're both black. Donna, not fixed in the head, but MARRIED TO A MAN, SO THAT'S OKAY. Jack got over his dead grandson and lover by being set up by the Doctor for a fuck with Russell Tovey.

Also, I might be mistaken, but it seems like the Master suddenly disappeared in the middle of a scene, and was never mentioned again, like a plot point they just forgot to pick up.