As far as I can tell, Paul approaches his setlists this way: he has 8-10 or so Beatles songs he always plays (Hey Jude, etc), another 6-8 that rotate around with a new one or two sprinkled in each tour (All My Loving, I will, Night Before), his big hits off Band on the Run (you know the 3) plus a couple additional Wings songs (recently, its a couple more of Band on the Run or Too Many People, or Listen to What the Man Said). He also includes 2-3 tribute songs; 2-3 songs off the most recent album (or 2 with the Fireman).
The only song that doesn't fit this mold that he's played regularly is Flaming Pie. And Coming Up.
Based on recent interviews with Paul, I don't think he views most of the material he did in the 80s as on par with the rest of his solo stuff. It wouldn't get the response his carefully selected Wings stuff gets and it's not new, and thus he isn't going to play stuff from the 80s to sell product. As a result, the stuff from 82-92 almost entirely falls through the cracks. I'll just add that I think the nadir of Paul's career was from POP to OTG. I never listen to any of those 5 albums.
While I absolutely agree that Paul should vary his setlists by rotating from a much bigger pool of songs (he could easily have 100 songs without dropping in quality), I have no interest in seeing him play more songs from the 82-92 era.