Am I the only one who wouldn’t be surprised if the Doctor’s next (or next-next) companion was his and River’s daughter?
I mean really… We’re talking about Mr Troll here - Steven Moffat. Would it surprise you?
Also it would deal with the issue of “yet another companion, who falls in love with the Doctor” (hopefully it wouldn’t be an issue - if it was: eeeeeww!!) =)