Say that no one you interview has those particulars, and you hire someone who's just -- by your regular, baseline standards -- qualified for the job. Do you have a cutoff for what you would pay those people? Then you should probably post that, and then just act like companies that comply with this stuff already and include some kind of disclaimer, that extraordinary candidates may still fall somewhere outside that range.
You want to set laws that hurt 99% of employees for a theoretical benefit to a 1% case for the employer?
it's just multiple grades at that point masquerading behind a broken HR system