Treasure: All in all, GOG should rather bring back the previous system of 1.5 GB increments
d2t: Why? The Witcher 3 official requirements state the game is 40 GB. Assuming the installer would be also this big, by your logic you'd like to punish everyone into downloading 26 separate files. Can you explain in what way it would be beneficial to all GOG users beyond satisfying your personal preference?
I understand your reasoning-you don't feel like downloading 26 separate parts( this tended to happen to me too with big sized downloads-didn't feel like downloading 5 separate parts, and thus left my big games undownloaded-as a matter of fact, I haven't yet downloaded the games in my attachments)... However, would you, as someone who wants to download his game, prefer 26 parts of 1.5 GB or 2 parts of 20 GB each (because if they start this system, they might as well end up with something like that)? The main problem with this new system, is that, instead of bringing extra convenience, it might ramp up the inconvenience for some people -for example those without a good internet connection. Case in point: suppose you download a big game and go home to install it-you run the check for corrupted files, in case something went wrong, and lo and behold, a couple parts are corrupted. Let's suppose the corrupted parts were 3+5 (out of 8)-both in the old system are 1.5 Gbs each, and you just redownload 3GBs and get done with it. With the newer system however, maybe out of 4 parts 2+3 are corrupted and they're like 4 GBs each-you have now to redownload practically half of the game for a few corrupted bytes. And especially as
Treasure: the bins are more likely to get corrupted too
for these bigger sized games.
So, tl;dr, this new system instead of making things easier it makes them harder, by forcing you to redownload much bigger portions of the installer in case something goes wrong (and as they're bigger, they're way more likely to get corrupted-rinse and repeat and you'll understand the sheer frustration of this in comparison to just downloading 5-8 parts once-and in very few exceptions 26-see the PS for that).
P.S.(As a sidenote also, the huge downloads on gog games aren't that many-maybe Witcher 2+3, the removed ArmA games and not much else-most gog games aren't bigger than 8GBs at most...)