Quick answer
Shared progress should be explained around real player concerns: who owns the save, what carries across sessions, and how teams should plan their roles so nobody wastes effort.
Co-op guide
Shared-progress pages are strong because they answer the exact question multiplayer groups ask before they commit time to a session.
Shared progress should be explained around real player concerns: who owns the save, what carries across sessions, and how teams should plan their roles so nobody wastes effort.