It would be helpful to have a guest link (like Google docs offers) for 3rd parties to see the schedule.
Many social media marketers have customers who want to see the planned posts, but don't need to contribute (like team members) and often don't have the time to log in or create an account.
Also: as a Later user with the max plan, you can add max. 4 additional team members, which isn't enough to give all clients (in this case 5 clients) access to Later.
It would be nice for guests to see the posts in the way it's going to be planned so that they see the bigger picture, which would be great for Instagram (where there is often a feed lay-out).
Use Share Calendar on the higher Later plans to share your schedule.