Why not just grant financial instruments that incentivize everyone to increase its value (Stock or RSU's) and make compensation data public, revealing who gets paid what?
Maybe I'm being an idealistic hippie or whatever. I kinda feel that opaqueness around compensation is meant to keep employees under-compensated for as long as a company can afford to do so. Solution: compensate everyone well, and if you can't afford it, don't be in that business anymore.
Large sectors of the economy are too competitive and of such low productivity to compensate everyone well.
Ultimately you can only afford to pay someone what the marginal value of their labour provides. If you pay them more it has to come from some other person in the organisation or the company loses money.
Maybe I'm being an idealistic hippie or whatever. I kinda feel that opaqueness around compensation is meant to keep employees under-compensated for as long as a company can afford to do so. Solution: compensate everyone well, and if you can't afford it, don't be in that business anymore.