Or changed their saves to be more sparse. Why not have save files store seed + world settings + delta? I've noticed that generating mostly empty map space by

Or changed their saves to be more sparse. Why not have save files store seed + world settings + delta? I've noticed that generating mostly empty map space by shooting exploratory artillery shots caused save files to jump to 100s of MB. My saving grace is that I always host a dedicated server so no one is responsible for save file distribution other than myself (which is easy enough to automatically sync to interested clients).