Is there any way that we can add an option to prevent anyone but the host from saving the game or autosaving the game in Multiplayer? I would be ok with even locking those saved games and forcing players to only be able to play the race that they were playing at the time of saving to prevent load game cheating? 

I say this because my friends and I have been playing a game and we're all concerned about certain people in our group who don't always play by the rules (There are 7 of us). They can easily save game and while we're on a break re-load the game and join as another faction. This allows them to map hack by seeing what others are up to. Even if I'm not playing with friends we all know this game takes longer than one session and would be a nice multiplayer feature for playing with random players.