I find Mark's oft-repeated statement that he's got to please himself problematic.
One the one hand, he's in a position financially and artistically to do exactly whatever he wants, and I also think that Mark is terrible at pretending, meaning that his displeasure or boredom clearly will shine through, as was evident during the end of the long DS tours. So as long as Mark has a good day at the job, chances are that his enjoyment will spill over to the audience.
On the other hand, there's no denying this attitude comes across as very selfish. He must know how much the fans are longing to hear some of the old gems. Maybe they are not gems to him anymore, but here I agree with some of the comments on Guy's forum, the fans have after all made it possible for him to be where he is today. If he can dig out the played-to-death hits at a slick corporate show - which clearly shows that he can when he wants - why not dig out those treasures to audiences that would go absolutely bananas, not for fancy pants sipping to their martinis while nodding their heads to Walk Of Life, going "Yeah, 85 was a good year"? Wouldn't that tremendous excitement among the audience feed back to Mark, making him having a great day at the job?
I definitely think so. But maybe he fears it, maybe he'd feel as some kind of defeat that the audience would be more thrilled by the "old stuff" ("going back") than the newer songs ("looking forward")?