I’m kinda 50/50 on whether MP would play Mangini era stuff if he ever came back. Bosk makes a good point about him insisting on JLB and JR play earlier material but I think he considers DT to be his band and he may consider anything recorded without him to not be DT. I’ve got a feeling he would basically say something like he would find it too heartbreaking to play DT stuff recorded while he was out of the band. Would be interesting to see though.
But JLB and JR play stuff that was recorded BEFORE they entered the band, and are still in the band. For MP, coming back and playing stuff that was written AFTER he left would feel weird. As said above, he stated that it would be like asking Derek to play Jordan's DT songs, which he probably would not be interested in doing. Heck, DS has even gone on record as saying that he wants to get away from playing DT music in general, even stuff he wrote with the band.
It would be very awkward, I think, hearing him play anything that was written with MM in the band, not that he couldn't do it, or do it his way, but just because it was released as a band without him in it. Maybe if there was just ONE song the band insisted on playing from the MM-era if MP rejoined, he might concede to that, which reminds me of Steve Howe, who I think wasn't very keen on the Yes West material, but was convinced to be play "Owner Of A Lonely Heart", a song released by Yes but with his successor Trevor Rabin, who has a distinctly different sound and style, but Steve plays it anyway.
So who knows... I don't think MP or the band are really looking to reunite in any capacity that would be beyond a single night, or even a single song. Baby steps, though, as having JR and MP on the same stage again at Cruise To The Edge was, I think, the first time any of the current DT members have been on stage with MP since 2010. It may have taken nine years, but we might see MP with JP or the rest of DT on a stage again before they all call it a day. With the recent news that Nick Mason got tired of waiting for the call for a Pink Floyd reunion that never happened, I don't see MP ever truly closing that door if the others were open to it, but I don't feel like now (or any time soon) is the right time. Maybe for DT's 40th anniversary in 2025?
-Marc.