It's MK last big tour, and he looks like uncomfortable physically. A setlist set on stone could be a tool to cope with the long tour he has to do. He'll be safe with it and probably that would produce great versions to the middle/end of the tour as it's so played that it's perfect.
I think that having some songs in rotations, beside the "Going Home / Piper" one would have been great, playing one day "Bacon" and the next "Back on the dance floor", it would have been just one rotation that with repetition would had been safe.
We are just on 5th concert but in Madrid I was under the impression that this is going to be it until the end.
And that's not bad. This tour have some great surprises like "Once upon a time", "Heart full of holes", "Silvertown blues" that makes this set, even it's static, great and different, despite the come back of "Bore with Bonaparte", Danny's bodhran and the brass section doesn't turn it into something better, but they do it with "Paraguay" which sounds so great with trumpet, percussion and the latin piano thing...