I looked around and searched for a save game location suggestion, but didn't find one. Perhaps someone can link it for me if there already is one.
Today the save games resides under the $user/AppData/Roaming user profile in windows. While that certainly is a good place to have it if you are an Enterprise Windows user it's not as good for regular users with synced cloud drives as those generally aim at My Documents when syncing. Microsofts OneDrive is the example I have in mind.
Many games choose their save game and screenshot location under My Documents/My Games/[...] these days. I think that would be a good place that is also substantially easier to browse and find as a user.
Two suggestions:
- I would ideally suggest to have game data in a location of choice rather than hard coded.
- Default save game location under [...]/My Documents/My Games/Factorio/[save|mods|etcetera]