Not sure if this has been asked but i been thinking about this whole steam workshop thing (which I have no intention of using) but what if you download a mod and its updated but the update (like a lot of the bigger mods) require a clean save...what happens then seen as the download is automatic...?
You don't get a clean save and need to open up data files, de-select the mod' and launch the game just like you would if you had downloaded the mod from anywhere else. It makes absolutely no difference whatsoever. Mod authors could simply have an in-game message appear telling the player to create a clean save by exiting the game, de-selecting the mod, loading the game, exiting the game again and then reselecting the mod. It's hardly an end of the world scenario.