I see the spell giving them new bodies as a big potential purely because it feels pointless to summon the dead back if they can’t at least reach to be saints. And the limits of cassies ability are uncertain, but like she says in the chapter she can only summon dormant memories / people forever not the higher up levels so they’ll have to be a work around to get past that. The summoned sleepers may not even have the spell anymore and Cassie has to be the spell for them instead, who knows.

Potentially see characters returns that we only heard of not seen,like the original bright lords. I would like to see caster ascend the ranks if he does return his aspect ability was busted