This is an interesting take, especially coming from a non-gaming focused tech website like Ars Technica. I feel like it’s been too long since people were truly hyped about half life 3 though, and this wouldn’t be enough, even if Valve did go through with it.
People are increasingly unhappy with windows though, and the EoL of windows 10 may push people to Linux anyways.
As much of a Linux fanboy as I am, I just kinda hate platform exclusives in general when it comes to gaming.
Something fun could be Steam items you can only gain through playing the game on Linux, Like the promotional in-game items you got for playing TF2 on the launch of the Mac and Linux versions.
I think it would be cool as a freebie to steamOS users. Would encourage people to try out installing steamOS to get the game for free.
Could either be that they just need to try it once to claim the game, or the game is free to play as long as they stay on Linux/steamOS to encourage them to use it long enough to finish the game.
I think if they did a special launch on SteamOS and made it super polished it would be a nice demonstration… Or maybe an exclusive demo or minigame or something along those lines. They did some nifty stuff for VR this way and it got people pretty hyped about it for a while back when Vive launched.