She can honestly work with that! Banyan lifestyle foreverrrrr!
She'll merge them up and let all of her queued idle ideas spill into her powerset!
If anything, if she can do it right enough, that's a feature, right? Because not everyone is going to have a super benevolent custodian of their eternal soul. Or from an alternative perspective, that means that you get the best of both worlds - they get to enjoy their eternal reward, and also you get to be pals with them in the mortal realm! Gods who can't see that are big stinkyheads, in her opinion.
...At least assuming that wouldn't mess too much with it being like, an exact exact copy? She wants to let herself be particular about that even if it's not like, super tactical relevant or even necessarily relevant to how well they could relationship, at least in figuring things out in principle.
Would a process like that retain the magical power of a magic user? It would be annoying if it didn't.
...Actually, it would be kind of annoying for the sindella case if the eternal reward mangled her connection to say, the red light. Hopefully that's not the case? You could probably do something with earlier backups but that's not like, ideal.
- Now she's wondering if there's something you could do to resurrect someone through the planes of order and chaos, if they have that same kind of record. Maybe you could even double ressurect someone :3
You could probably revitalize e.g. a shade from hades using a similar process too, right? Unbind them from hades and replace that with a connection to a living cycle of the colors or their emotional record or what have you, plop them in a body, and debug that as you go 'til they're a reasonably whole person again?
Reincarnations are a thing! So that's another angle - if you're in an afterlife where you can request that, you could just you know, go and request that, and then as long as you're willing to wait a bit for a body to open up you could conceivably do the same kind of trick with imprinting the colors to restore memories and feelings and patch up the records and everything? That way you wouldn't even have to go out of your way to make a body or defy the system, you'd just be doing a bit of patch-up work to the soul, maybe? Though that's complicated a bunch by whatever the range is for possible reincarnations, oin terms of species and timespan and physical space.
Ooh do brain uploads and brain transplants, like, work, spiritually? She's not super sure how death and soul transmigration is adjudicated, though the answer is probably to some extent "Whatever Death of the Endless decides in the moment". And yeah, obviously all of this is off if she doesn't want this to work, but still! Here's hoping.
She's sure there's a bunch more hackier and specific more direct ways to do it but when all you have is a hammer, every problem looks like a nail! She'll have to poke batman and/or the database later to see if there's anything else the league knows about that she doesn't, but this is plenty to go to them about already. Maybe he'll have ideas once he's over the shock? Anyways, she probably shouldn't over linger in her own head, here.