it never hurts to ask / request…
(i sort of brought it up myself in a related feature request: https://forum.inaturalist.org/t/automatic-inat-suggestion-for-unknown-observations-that-reach-a-certain-age/4242/18 .)
that said, i’m guessing the scope of such a change would probably be quite significant, and i’m guessing the staff would view this as more of a nice-to-have than a critical-path kind of item. so i’m guessing the benefit-to-cost ratio would probably be way too low for staff to even attempt to go down this path, and it’s probably too wide-ranging of a change to be handled as a side project for a lone developer. but maybe if the seed of the idea were planted now, it could turn into something when the conditions are right – maybe next time they’re overhauling the observation model or something like that.
if this did end up being worked, i don’t think you would want to hide the CV ID, though maybe you could put it in, say, a section on the observation page that can be expanded or collapsed.