Well I don't have faith in Moffat. I'd want to at least want to wait until the fourteenth doctor until we go female. A lot of people I know are against it too. We've not even had a black doctor or any other ethicy yet, give us a black doctor or whatever first, then we'll talk.
Maybe a female doctor would be played well, but I just can't imagine anyone who could do it right.
For the record, I'm not just against Emma Watson becoming the doctor just because she's female, but because she's far too young in my opinion and I think she'd play it badly either way. I don't want her anywhere near Doctor Who in anyway let along the doctor himself (or in this case, herself).
I don't think we're quite ready for a female doctor yet. Can't think of a suitable candidate either. Nope, at least for now, I'd much rather have a male doctor again.