Not a perfect solution, but you could just use Steam to load games from GOG on Linux though. Thereby getting "the best of both worlds".
I have yet to stumble upon any major issue doing this.
Also, running other store launchers under Steam Proton works surprisingly well. I've been able to install Battle.net as a custom entry in Steam and run StarCraft II flawlessly in Linux.
You get to launch Windows games through Steam Proton.
It's a no-hassle way to get up and running with gaming on Linux, although many are probably using Wine or Lutrix.
