tfishell: I don't think most people should necessarily buy a game on GOG if they're already happy with their original copy, generally I just view GOG's releases as a way for people to get
legal copies of games DRM-free and working on modern machines (obviously not always straight out of the box, but GOG does try).
I don't think they should do that either, unless GOG's version adds something to the original.
And to me, after reading GOG's original description, it certainly gave the impression that GOG/Blizzard had changed the game so to allow full-screen high resolutions without stretching the screen.
Knowing that there are mods out there that also do this (but unfortunately also add a lot of unwanted crap to the game), it didn't seem impossible to me that GOG/Blizzard devs went into the code to make some genuine improvements. After all, they collaborated with each other, and we all know Blizzard could use some good attention right now. But I get the feeling this collaboration was nothing more than GOG copying Strange Bytes' patch, asking Blizzard to sell Diablo and Blizzard saying: Sure.
I also wonder what these bug fixes would be, since apparently duping is still there, and other than that the original game doesn't really have any problems. I played through it several times these past weeks.
Some guy around here promised a changelog, but the one that's pinned in this forum says nothing at all.
Anyway, I just hope GOG will not mislead their customers in the future and be crystal clear about what the improvements of a certain game are, if any, and that people are allowed to be disappointed, because GOG
did handle this rather poorly, in my ever so humble opinion.