srfc
Ancient Mariner
Given the trajectory of the band members' ages, health conditions, and what we know of their future plans, I would say the chance of them playing anything from X Factor or later ever again is near 0. I think all Somewhere in Time songs outside of Wasted Years are out. CIPWM and Prisoner are probably out just because they will make room for other songs from those albums that haven't been played in awhile.
This will be a special tour in terms of once in a lifetime opportunities to hear certain songs, but there are probably at least a third of the songs on each tour going back to TFF that are in that category.
You might get a BNW song, or a new album song, if there ever is a new album, but agreed no hope of anything else.
You're probably only 50:50 for anything other than FOTD from the 90s on the forthcoming tour as well.