I am a gamer and I wish more games would be on the Mac. However that being said macs have middling hardware, worse GPUs (if they have one), METAL which cant hold a candle to DirectX or Vulcan, and the reality of ports always being poorly optimised to run on something it wasn't designed for. This will translate, as it always does, to the worst way to play the game in a sea of options. Apple have made progress, but it's too little too late IMO
I would be exited if:
1) Apple to put discreet mid to high-end GPUs in all of their machines, and start reflecting a Macs price point (like they did 11 years ago).
2) Adopt Vulcan for pitty sake!
3) Talk to GPU chipset makers to have the hardware optimised for Metal. Just as Microsoft does to AMD and Nvidia, for Directx.
4) Developers designed around mac first, and other platforms second to avoid unoptimised ports. That wont happen (see points 1-3),
Gamers don't touch Mac because the hardware is garbage for the price point, and the OS isn't optimised for graphics intensive tasks (although the later is improving slowly, but the former is getting worse every year).
Point in case the mac-mini is a GPU-less brick that costs ~80% of the way to a VR gaming beast, but not 80% of the way in performance. Just spend the extra couple of hundred and get something that smokes it and all other "consumer" Mac flagships, for the next 3 years at least.