I'm starting to wonder if the BBC is just trying to pull a modern Michael Grade on NuWho. They want to cancel the show, but don't want the bad press. So, they sabotage it in various ways and eventually, when people get tired of gap years and the general mediocre quality, they can use that discontent as an excuse to cancel the show.
I hope I'm wrong about that, its admittedly just a random thought that came into my head, but I will not be surprised if Doctor Who takes another 16 year "break" after Jodie's third series, as much as I don't want that to happen.