Hi. After having migrated my wife's and my consolidated 50k+ photo library from iCloud to Lightroom CC, I am now looking into how to share specific subsets of pictures with her and my family, most importantly our parents. We have agreed that we do not want an "open", unencrypted system, as could be done by sharing on the web: (a) because of privacy issues, but more importantly (b) because we would need to send around new links for every new album to all family members, making administering the family-wide photo sharing much more complex. Once we start having kids in 2-3 years, this issue will boil up big times 😉
What I am suggesting to come up with is a read-only sign-in for family members (or standalone "Lightroom CC Reader" app) to which we can share specific albums (e.g., those including our future kids) without the photo data to leave the Lightroom CC ecosystem. This has briefly mentioned here, but I felt this issue is big enough to start a new conversation.
I know that I could resort to Lightroom CC's web-sharing option, create "shared albums" in iCloud and post pictures to those, or use another cloud-based service to share photos with family, such as Dropbox. However, all these solutions require more effort, complexity, picture data in multiple and thus redundant locations, etc. I just want a tidy, easy to use option within Lightroom CC.