While Doctor Who executive producer Steven Moffat wasn’t ready to divulge Maisie Williams’ enigmatic role in the new season, he did go so far as to reveal that “she isn’t playing a returning character or someone in the Doctor’s past. Her role will develop in an unexpected way.” Moffat during his TCA appearance for BBC America today applauded his fellow producer Brian Minchin for conceiving her character, and assured their room that the Doctor Who wasn’t “just going for…