Hello, I've been searching for the answer in forums and documentation but failing to find it, so, it's time to post!
I've seen questions about how to filter leaderboards by region. I'm not worried about that yet.
What I'm dealing with seems pretty basic and would be common. I allow players to create PlayFab accounts with as little friction as possible on mobile (using Device ID). Most players will not have a Display Name. Once they Link Facebook or Google accounts, I set their Display Name to the name from that account.
I want to make the leaderboards more of an "opt-in" once you've linked an account and gotten a name. Otherwise, I am currently having to request blocks of leaderboard entries and then ignore them locally if they don't have a display name. This is definitely not ideal and creates a sparse list.
I'd prefer this to be a feature with a simple setting in the PlayFab dashboard Leaderboard Settings to require display names, but it's OK if I need to write or edit server code or Cloud Script to make this happen. I just don't see where to do it yet.