Serious for realz genuine prediction:

They give away The Witcher 3 for free.

Not until Cyberpunk's out.

They announce their acquisition of Paradox so they can finally release Cities Skylines and the rest of their catalog here.

I'm hoping for a new improved site and forum. (I think the Zendesk Support software is working fine though; no need to touch the Support section imo)

To be honest, if CDP was to spin off a new game division that was meant to create games specifically for GOG... I would rather they work on new IP's that are separate from CDPR. Especially IP's that have already released on other platforms which already have a following on those platforms (ie the Witcher)

In my opinion, lack of new exclusives is holding GOG back more than anything. DRM and timed exclusives of old games will always be a niche area. Nobody uses Origin because they like Origin, they use it because it contains games you can only play on Origin. Cyberpunk 2077, honestly should be GOG exclusive, but I think they have already stated it won't only be on GOG.

The next best thing would be to spin off a smaller studio and publish the games under GOG, like a few other games here.

GOG needs it's own Dota 2, Fortnight, CS:GO, etc. that draws in people. It could mean the difference between GOG having a few hundred thousand active users to a few million. Once you have attracted someone enough to create an account and buy a game, you have lowered the bar of entry significantly and made it more likely they will purchase other games on GOG.

I know some people don't like Store specific exclusives, but it's the only way GOG will truly grow. People that don't care about DRM or old games have zero reason to use GOG, and that is a significant amount of gamers.
Me too. I was 100% serious with that post, I hope it happens and I think it is needed more than anything else. :)

I may be wrong, but isn't that what they do with GWENT? Or can you play it without a GOG account?

Yes and no, this is true while in beta. However, they have made it clear it will release on Steam after official release, so a lot of people are probably fine waiting until then. Card games also don't have a huge draw like other game generes. So in a way, Gwent has provided that but it's not nearly enough.