I was just thinking about this today. Apples lack of any 3rd party integration for things like this and iMessage is really annoying sometimes. In addition to a secondary backup, I’d love to automatically sync some photos from a certain album to my parents photo frame. Or if I take a nice nature shot have it sync to a Samsung frame tv. I get the benefits of the walled garden but esp w photos and messaging it seems like opening up a little would allow for some innovation

I use PhotoSync on my phone for this - select which albums to sync where with a rule and away you go.