That is a very good point except... After over 500 games, I have never lost a save unless the RenPy version changed. This might not even help if that is the case. RenPy version changes usually break saves and if so, no old save will work. Then if there is a bug in the game that cannot be skipped, you have a bigger problem anyway. If something happens like loosing a HD, you will probably loose the persistent files so this will not help either. There is always the "skip" which will allow you to quickly move trough the game to each choice. Make that choice and move on. This normally takes very little time to get through several chapters 🙂.