Some comments from non-audaxer friends:
Awesome scenery, exceptional challenge, etc.
Why no women, no geriatrics ( like self, Pat, Ian and no doubt others. There was overwhelming focus on young male (even Swedish) riders, whereas most cyclists I know are bus pass carriers.
And the best scenery, from a rich crop, were omitted, IMHO:
Views of Arran in pm sun from road S to Campbeltown
Sun setting on road to Durness to NW - Sun rise a few hours later in NE
The lochans covered in white water lilies in the Aird of Coigach
The Great Glen at night, traffic free and full of night sounds and shadows.