Originally Posted by
Lauront
That may well be the point the writers are trying to push, but it is understandable to me why the Convocation - and their broader society - would refuse to adapt in that way, because putting aside any other desires for their return, if those souls were stuck inside Zodiark, they'd effectively be in a form of purgatory and deprived their connection to the star. Certainly in the story up to SHB we're not really given any reason as to why they'd need to be sundered, other than the opinions of Venat's faction over whether the new lives should inherit the star. The only rationale I can see comes post-EW (and only after the Elpis events, i.e. this would not have been knowledge available to them in the timeline prior to this), and even then only if you assume that had they been told the full story (which they were not, because the only person who knew it did not want to alter the timeline), they'd still have pressed onto their potential doom. In the absence of that we're stuck with "what ifs" as opposed to anything like a justification.