In other words, it has been awhile. Not saying it won't happen but I imagine they will want to start fresh the way they always do when switching up tour themes. And if they bring back Rime or Seventh Son those will be the epic picks (not to mention the inevitable return of Hallowed).
If the, drop Celts or Time Machine, they could do both Alex and Seventh Son IMO. Time Machine is as demanding as SSOASS IMO.
Regarding setlists, there is no rules anymore. I think almost everything we knew about IM setlists went through the window in 2023. If somebody said to me in 2016 that in 2023 they will play 5 songs from SIT, open with CSIT and premiere Alex, I would tell them to stop dreaming and wake up.
My bet is, they prolong TFP tour for 2025, go 4-3 in terms of songs (SIT and Senjutsu) and play Euro stadiums. One of the new songs in the set is a new single. Hallowed returns to the set too. Time Machine (for Hallowed/TNOTB ), Celts (for Seventh Son), Madness (for a new song) and maybe Heaven Can Wait get axed. This is most likely scenario IMO, with a new album release in autumn.
That said, Maiden can pull something totally left field and do a reverse chronological order stadium tour with an orchestra. Considering what TFP set is, nothing can surprise me at this point. But, at this point, 3rd leg of TFP with some changes seems the most likely IMO (especially considering what Bruce has been saying in interviews).