This is a brilliant, brilliant game on PS4. I had the download version since January 2016 and they released a new level every month. It lasted the whole year and I still play it.
Hitman kinda contradicts your point doesn't it? And DirectX will never be part of macOS.
Regarding Vulkan. It'd be always better to have it in addition, but if I was to choose now, I'm not sure to prefer having it on the Mac over Metal. Metal is controlled by Apple, so they can update it regularly and provide the best integration with developers tools. It is much easier to use than Vulkan, according to developers. Currently, there are very very few Windows games using Vulkan. Actually, there may be more Linux games that do (thanks to Feral).
So as most Windows games use DirectX, they will have to be ported to other API to run on macOS anyway. And Metal makes it easier than Vulkan.
There are a couple of game engines that use Vulkan and not Metal (ID tech 6, Source 2), but very few games use these engines anyway (and there is hope that Source 2 will be ported since Apple has been working with Valve).
Nowadays, Is this version (from the store of Feral Interective) compatible with Apple Silicon ARM?.
Is there anyone that has bought this game and has played on a Mac with Apple Silicon? (I run Mac Os Ventura on a Mac Mini m2 pro, see my signature)