RADIO TIMES (the BBC's own weekly TV and radio listings magazine, in case overseas AMIT-ers don't know) says that Mark "talks about his early life and his career with Dire Straits", mentions that collaborations include Tina Turner and Bob Dylan, and says Mark is set to embark on another tour.
Yes, maybe MK is more comfortable in his skin these days but perhaps there are other factors at play.
(1) time has passed since the DS heyday and the passage of time smooths and soothes
(2) MK wants to put his own view/memories forward
(3) at a certain age, one's legacy becomes a consideration
(4) MK feels a need to raise his public profile
In case nobody has mentioned it, the MK programme is on twice this coming week (Sunday 3 March and repeated on Friday 8 March). On the Friday, it follows a documentary entitled "The Ballad of Mott the Hoople". The latter has "rare and previously unseen footage". Sadly, there is no mention of this for MK's programme but you can live in hope.
QUICK MODIFICATION #1: A friend of mine, a Mott The Hoople fan, no less (in fact, he once was a roadie for them, as I recall) says he thinks the BBC programme is an edited version of a publicly available DVD. Maybe Mark will issue his BBC4 programme as an extra in a future release.
QUICK MODIFICATION #2: Not on the subject but another of my contacts (who is very keen on Mark's solo concerts and albums) said to me that he wishes PRIVATEERING were a single CD, as he thinks it would have had more impact.