After a bit of debate back and forth, I felt compelled to break down the reading as much as possible. The source of uncertainty for me is that we begin with information about Bahamut, and then we have information about primals in general, and then we go back to focusing on Bahamut, and end talking about primals in general.
I'm not completely confident that I'm not just taking information specifically about Bahamut and applying it too broadly - the specific line about "the deceased".
It looks to me like it's talking about primals in general, but there's no guarantee. And, even if it is referring to more than Bahamut, is there a limitation? Is any primal independent of a previously extant thing?"Most Primals"
Bahamut
- Summoning comes down to the faith of the primal's followers. [F]aith acts as a beacon for the primal's dispersed aetherial essence. [A] being whose <...> parts were tossed into <...> the Lifestream [can thus be re-manifested so long as there is] the proper amount of aether to act as the catalyst.
???
- If enough followers of Bahamut (or <...> Dalamud <...>) were to gather and perform a summoning, then technically anything is possible.
Bahamut
- [T]he state of the believers when the summoning occurs directly affects the manner in which the dispersed essence of the deceased is reconfigured.
1.0 Primals
- Tiamat <...> and Bahamut's brood knew Bahamut better than anyone, but since their hearts were darkened by sorrow stemming from the loss, coupled with hate directed towards the Allagans, the Bahamut that was ultimately brought back ended up being naught but a twisted shell of the dragon Tiamat remembered.
- This also explains the differences between the actions and temperaments of other primals spanning from 1.0 to 2.0. The needs and desires of the believers doing the summoning changed following the Calamity, resulting in changes in the primals they summoned, Ifrit and Titan, even Shiva all being good examples (though Shiva's differences span back further than just 5 years ago).
I agree completely. To apply my source of uncertainty to your example: If "re-materializing the deceased from the Lifestream (even as something radically different than it ever was)" applies to entities beyond Bahamut, then something would have to be drawn to the beacon of the priests' faith (and given the form that their belief entailed); likely the very thing that inspired Amun-Ra (though, this example seems a little wobbly since Amun-Ra represented primordial aspect of Chaos.)
I maintain, though, that this is a bit of a moot point. If you summoned Phoenix, you'd know that Louisoix's remains followed the beacon. They might be warped so severely that no trace of his original self may remain, but those same parts are what would emerge from the Lifestream. But would it matter to anyone that didn't know that? Is there any difference to us what from so long ago is at the core of Garuda?
We might just take it as a given and move on without trying to figure out the specifics, which might just be too elusive to capture.
We'd just arrive back at - if all primals were things - what answered Ysayle's beacon if Shiva's remains are still within Hraesvelgre? The remnants of Halone, instead, perhaps. We know Iceheart's Goddess was also partly inspired by her image. Or perhaps Hraesvelgr doesn't have all ofShiva's essence.
I can't say this enough: I'm probably over-thinking it, lol.