[graynk]

That's also one thing Galaxy gets right. You can turn off auto-updates and that won't stop you from playing the game (unlike with Steam, which will just replace your "play" button with "update"). They also support rolling back updates, but I never tried that and I'm not entirely sure if this works for every game, or if this is something a game developer has to actively support.

[t0bia_s]

I don't find any advantages of having client of GoG games to be honest, updates was only one, but not in case with modding.

[graynk]

I like seeing my achievements and playtime (but also it's more of a nice to have)