I need Ashildr and Osgood getting together on the regular to discuss the Doctor’s latest shenanigans.

I need Ashildr, Osgood and Kate as the Defending The Earth squad. Martha and Mickey help out from time to time too.

Osgood: You used to wear question marks.
Doctor: Oh, I know, yes, I did.
Osgood: They were nice. Why don’t you wear them anymore?
Doctor: Oh, I do. I’ve got question mark underpants.
Osgood: Makes one wonder what the question is.