Moffat was good for one off stories, but can't create a series arc for his life. I'd love to see 12 with a new showrunner rather than starting off all new but I can see why the excitement of both being new could draw viewers back in.
9>10>12>11
#JusticeFor8
People do waaaay too much on Moffat I've loved all of his series (expect Series 8). His story arc's have been great; he cracks in time storyline, the Silence, River's origin story, even The Impossible Girl storyline >>>>>>. Also Peter is an amazing Doctor!