Why you should build a Hackintosh
Fast forward 5 years and Apple still doesn't have a solution that satisfies customers that have extensive need for customization and specialized workflows. During the time of trash can Mac Pro, I worked on a 5K iMac, because I really liked the hi-resolution display. But hiding away all those cables was a chore. After Apple showed us the future of professional hardware with the iMac Pro, I was fed up with the situation and I started to investigate the possibility of building my own Hackintosh. Putting all the hardware together was the easy part, making macOS work was tough, but I did it.
I honestly don't believe a 'Hackintosh' is a suitable machine for any mission-critical environment, but if you're willing to deal with the risks and minor headaches, it's a not-as-hard-as-you-think way to get your hands on a very powerful macOS machine for a very reasonable price - with a lot more options and choices than Apple will ever give you, even if you take the hypothetical, vapourware new Mac Pro into account.