It would be nice if world creators could save some setting locally on the players device. Saving options like performance settings will create a headache for world authors having to check if the settings are available on that platform or saving separate keys for each platform. If world creators don't add extra checks, it could lead to things like crashing on lower end devices.

A good example of this is Steams cloud saves feature, some developers save graphics settings inside cloud saves, making switching between devices like a PC and Steam Deck a headache, often leading to crashes because of invalid resolutions or poor performance.

Ideally settings like game progress would be saved on the servers to help prevent tampering and things like visuals could be saved locally.