It would be good to be able and create photo albums with share management, possibly with additional folder levels.
Rationale: One may want to create a collective album of people pictures, related to the family members in a specific branch/town, and also let people add pictures to a separate folder with pictures of buildings, momuments... This would greatly increase collaboration (and enthusiasm) between living relatives.
Currently, you get a sprawl of albums where it's difficult to maintain a logical structure.