One step at a time. Give Apple another few years ....
Otherwise ... Hashphotos. Personally, I do that kind of editing on my laptop but it would be good for Apple to simply allow us to edit all the metadata it captures. This is back to the "Thanks for entering the Wifi password for that network. We're going to store it for you and never let you see it again" philosophy that caused me to jailbreak back around iOS 6. Grr. I'm still bitter about that

Yes, I now have a Macbook with keychain but I didn't back then.