@juergen_hubert Maybe hunting down radioactive/psionic portals that emit corrupting death - which is why the region is now mostly wilderness rather than heavily inhabited. The goal isn't to make the region safe for colonization, but rather just to help those who already live there.
Note that the original reason for the players to go on this adventure could be different, but finding their first portal changes things.
@juergen_hubert I think the simplest and most elegant solution is that the professed beliefs of the person dying is utterly irrelevant to which gods "get custody". All the gods that actually exist are just doing their own thing, and whichever gets to you first gets dibs. Or maybe they tustle about it afterward if they feel like it.