I'd be interested in a Mac once Linux is viable on it. OSX feels outright hostile to power users at this point.
Making sure their CPU/GPUs work perfectly with e.g. Steam and making sure that game studios are able to target Apple hardware would make a lot of difference for their appeal to gamers. Steam, of course, is also starting to work in Asahi Linux as well. There is really no good technical reason why that couldn't work on Mac OS natively.
Of course the same reason that this is a good idea also means Apple won't do it because they seem to prefer controlling their software ecosystem at the cost of failing to grow it. So Metal is nice but completely useless for gaming, or indeed most consumer focused use cases involving 3D (except for the Apple sanctioned ones). OpenCL/OpenGL barely work at this point. Forget about vulkan or directx. The whole AR/VR thing is perpetually not happening at all on Apple hardware. Until such time that they choose to release some Apple branded hardware for this of course. They are also not really investing in making their AI optimized hardware work for mainstream AI developers. Etc.
Anyway, Apple could make a really nice gaming focused console based on e.g. the mac mini. Not that hard. It would not require a lot of changes. Basically beef up the Apple TV UI, make sure games actually can be ported to it, and job done. Not that hard. But as long as their OS is locked down and developer hostile, none of that will happen.