Sorry but there probably wont be a real solution. You didnt want steam because it is a form of DRM with Service - what you are asking for is pretty much steam again - a service that automatically keeps your games up to date.
No, all I want is a post on a Larian forum or page saying that there's a new patch and whats in it, e.g. in the "Divinity - Original Sin - Latest News" forum.
