Hi there,
I think this may be useful for families and the like.
My housemate and I watch series together but sometimes she is away or busy, so I carry on without her, and vice versa.
It would be really useful if we could create a group profile, called "house" for instance. This would then be linked to our individual profiles, so when we watched together as this "user" both our individual account's play states would be updated.
If I then wanted to continue alone I would use my personal profile which would not update hers or "house".
So this would be a one way sync from house to each user on said group.
Even better would be a two way sync but with a "resume from user_x or user_y" option.
I doubt this is a hugely necessary feature but it would be nice.