Now that they revived their Flight Sim and are doing a major overhaul what older title would you like back? How about a new MS Train Sim or even a driving sim where you drive an open globe and create your own missions/races? Microsoft Vehicle Sim where you build your own craft with realistic physics and see if it can drive/fly,ride,etc? WARNING: Requires actual thinking and tinkering with an understanding of dynamics.
How about retro products like Midtown Madness/Motorcross Madness, Microsoft Kids,Home,Office,etc getting some new birth for Gamepass and actually make Windows a whole lot more functional then just for phone idiots and gamers only?
A decent SIM city game, like a direct sequel to 3000.
Windows 7. No more bloatware and bollocks that you get with 8+ Unless you actually choose to download it. Which also includes full access to your folders too, none of this W10 crap where you can't access the game directories
Pinball.... For obvious reasons
The Space Cadet one? Just downloaded that a couple months ago.