Maybe a combination of both (updating the main download and providing the patches separetely) would be the best course of action. I for one am glad I didn't need to download more than 1.5 GB again. It also has to be considered that - as long as I play the game - I will bother SpherianGames with minor stuff that doesn't really justify an update of the main download. I'm sure SpherianGames will update the main upload when the time is right.