iippo: Anyways, how often you think it would be good idea to download them all again? Once a year? 4 times year? Make a excel list and write the last actual update times there to prevent me from uselessly backing up stuff that hasnt changed?
Or alternatively, GOG provides you an optional client that checks if your GOG games are up to date. Which is something I've been asking them to do. For instance, the _optional_ Humble Bundle Android client works that way, it checks if the HIB .apk files you have on your Android device are up to date, and if not, offers you to download the ones where there is a new version available.
I'm very happy that the HIB Android client is fully optional even for the download but especially the installation part, because the client has restrictions I don't like. For example, I can't tell it to download the installers (.apk) files to my external empty 32GB microSD card or install them from there, but it insists using only the 16GB internal memory for all storage and operations. That's just idiotic, but fortunately I can manually move the .apk files to the external microSD card, and install them from there manually.
iippo: Well, i can understand that someone else wants to do this sort of thing, but as i said, i simply dont have the time or really patience. I worry way more about many other things going bonkers in life than my bit spread game collection disappearing from my hands.
If you couldn't care less if you lost e.g. your Steam game collection, all the power to you. Maybe you didn't like the Steam games that much to begin with and don't mind losing the thousands of euros you used over the years to buy them.
I, on the other hand, want to still keep some of my customer rights to myself for stuff I have purchased, even if I have other things to worry about in life as well. In fact, I prefer DRM-free games so that I have one less thing to worry about, as simple as that.