IanM: I assume some of the newer games e.g. D:OS, POE, Wasteland 2 are excluded from this list because they are up to date? the grumbling about those and other new releases was because GOG patches were days or 1-2 weeks behind Steam but not neglected for extended times?
All the three aforementioned games are fully up-to-date here. Any complains that existed about them, have been about delays in patching (whether they took days or weeks).
Fever_Discordia: GOG doesn't have access to the new Postal 2 DLC yet...
I don't think this counts for the list.