What were the main goals of people going the hackintosh route? Other than techie tinkering.
I would think possibilities might include...
1.) More powerful CPU options at lower cost.
2.) More RAM module slots without having to pay the cost of a Mac Pro.
3.) A tower unit with multiple drive bays without paying for a Mac Pro.
4.) I don't know whether more powerful external GPUs functioned with them.
5.) Getting their system cheaper.
6.) I suppose if you had a tower with multiple internal drives, you could install MacOS on one and Windows on another, so you'd have in essence 2 computers in one box without needing emulation or the old Bootcamp route.
These days, a person can get a powerful Mac CPU with a Mac Mini (M4 or M4 Pro). With system-on-a-chip, user upgradable RAM isn't workable. I doubt external GPUs are, either. That said, there are options for expansion.
For extensive ports, an external dock.
For multiple drives, either stand-alone external SSD drives (USB-C 10-Gbps or Thunderbolt 3, USB-4 or Thunderbolt 5/USB-4 V2), or what amounts to a NAS-like DAS (direct attached storage) 'box' with multiple discs (possibly in a RAID array) like an OWC
Thunderbay 4 or
Terramaster D8 Hybrid HDD/NVME enclosure (10-Gbps USB-C). Or, for that matter,
a NAS.