I can see what you mean and you made a fair point about many things, like the stage set topic (which I can certainly be wrong about), but the bolded section caught my eye...
Like, yeah, maybe? But... before the "hints" started dropping in 2022, did anyone seriously think that they'd give such an extensive spotlight for Somewhere in Time on their next tour? Or before Legacy of the Beast tour (title) rumours started appearing in 2017, I don't think such tour, let alone the show & setlist structure they rolled with was guessed by too many fans here.
My point being:
We don't really know how many ideas and/or potential setlist & show concepts and structures they still have in their mind. A discography-spanning "50th anniversary" set in the vein of LOTB, Give Me 'Ed or Ed-Huntour is certainly a strong possibility and fair enough when & if Bruce, Steve and co. have strongly hinted towards it, but even so, it can still mean a lot of different things depending on how we interpret it, let alone how the pre-production and planning will eventually roll out early next year or so.
The reason why I've been thinking about them referencing and including songs and elements from certain albums and stage shows in particular is the sheer impossibility of creating a balanced coverage of their whole history as a band for a 15-16 song setlist. In basically every scenario, some eras, most notably the 90's, are most likely being neglected (and I can totally see why, as much as I love many of those songs) and some albums/eras (666/Powerslave/Seventh Son?) will certainly have a stronger presence than the others. I just think a more selective career-retrospective makes more sense. And the reason I think they might go for more of an album/era specific route rather than themes is that... well, LOTB kind of did it already. Might happen again, of course!
Obviously, I have absolutely no idea and I might be terribly wrong and I admit that some of the most recent... ehm, rumours, reliable or not,
do suggest a lot direct 50th Anniversary scope than I thought there would be. I just thought it'd be rather un-Maideny, but then again, it's not like we've had Iron Maiden 50th Anniversary before, so I suppose it's bit of an Tabula rasa anyway, even if you know how Maiden usually operates (or has operated).