across the universe divide

it was not.

A callback to Smith and Jones, what Martha says: "[I'll be a doctor] too, as soon as I've passed my exams. ... To me you've got to earn that title." She's earned the title in every way.

It didn't exist yet, but it would have been nice to compare to Moffat's run of the series and the idea he had - the Doctor is a choice you make, the things you do, not just a name.

Everything Martha says about the Doctor: "He has saved your lives so many times, and you never even knew he was there. He never stops. He never stays. He never asks to be thanked." It all applies to Martha, too.

She's the one walking the earth, trying to save the world. She's the doctor the people of earth know about. Doctor Martha Jones. What would some unknown, unseen saviour mean to them, when she's the one they've heard of, the one right there with them, comforting them in their time of need, telling them stories?