Just submitted via feedback the following suggestion:
That the red Updated flag does not disappear immediately upon viewing, or that a user has the ability to re-enable it or otherwise flag what they want to for future downloading.
It does get annoying checking out what was updated, seeing that the timing or size of the file prevents being able to download it right then and there, and then losing the updated flag when the page is refreshed. Sometimes I want a way to still be able to tell what I have yet to download after I viewed it, but under the current system I cannot do that.
Time will tell if anything becomes of it.
GOG is still an awesome site, and just getting the "Updated" notice is a huge plus. Just needs some minor tweaking...