A bit disappointed we have to wait a year. Also a little puzzled by their choice for new show runner. I have heard great things about Broadchurch, and I liked Torchwood well enough, but when I checked out the list of Doctor Who episodes he wrote, there really weren't any that stood out as incredible to (though maybe they were going with his overall diversity in tone or something). But maybe his experience with Broadchurch and Torchwood is what made him a good choice.
Well, as we've seen, being a good showrunner is only partially tied to how good your individual episodes turned out to be.
"Showrunner" is basically work as a producer, not as a writer. So, overall vision is important, but detailed writing as applied to the series less so.