Without beating a dead horse, it should be obvious to most that, all things being equal, it is extremely unlikely that the band would ever play it. But as we all know, all things are not always equal. There could be circumstances at some point in time where the band elects to do it. Personally, I think the only scenario I see that makes it likely is, if at some point in the future, DT and MP found themselves both booked at something like a cruise, they could reunite and do it as a one-off for an extended set on the cruise. Or if they felt there was enough fan demand where they decided to reunite for a one-off gig or VERY small string of shows to do it. Or if MP ever rejoined at some point in the distant future and they decided to do a one-off gig or VERY small string of shows to do it. But I'm not holding my breath for any of those scenarios. I think option #1 is the most likely of those, and I wouldn't have a problem with that as a fan. I wouldn't have a problem with option #2 either, but I think it is probably the least likely just because of the "demand" issue. I think demand, as a whole across the fanbase, isn't very high. And a lot of what demand there might have been went away once MP performed it with TSF. Personally, I wouldn't want option #3 at all. I don't want MP back in DT. And as of right now, I think there is next to zero likelihood of that happening. But I have to acknowledge that feelings change, and we have no idea what might happen in the future that could bring MP and the band back together again. So while I am VERY comfortable saying that it is HIGHLY unlikely, there's always a possibility.
As for it being played at all, I still hold the position I have always held on that: It would be cool to have it done as a one-off and documented. Personally, I wouldn't want to be at that show, because I wouldn't want to sit through the entire thing in a live setting. But I wouldn't hesitate to buy it, and would enjoy watching it. It's a cool concept, and even if it may meander and feel a bit bloated and repetitive as an entire piece, it's still a cool concept with a lot of really great music. At one point, I had a fan edit where somebody had edited it all together and created a transition or two where needed, and it was a fun listen. But it wasn't something I would listen to on a regular basis either. It was a fun occasional listen.