Have to disagree. Yes there were some glitches, a couple of time when the gain was too high and mixing in the off camera mic during Rod's bit. But these things happen on a live show. (You do want it to be live?) It's a pretty small time and have to move a lot of equipment and set up a lot of final mix outputs, HD, standard TV, on-line, 5.1 and the front of house. They hardly get any time with the band to set this up and are pretty much mixing live.
I have to confess a certain obession with mixes and often listen to 3 or 4 of them on a Sunday, (not the entire show, just interesting bits where I'm sure I heard them change something).
I thought they captured the soundscape of a large hall very well and still managed the 'intimate' mics well. It's quite a job to keep the costume mics down so they don't pick up extraneous coughs etc, but open them just in time to catch comments, e.g. the comments between partners when they get saved.