Actually don't see a problem with what is happening. Every player values their services at a different price and every team puts value on a player at a certain price. These values are all over the place. What one team might pay a certain free agent another team might think is ridiculous and never want to pay that salary so in essence they value them at a minimum price. Why should a team be forced to value a player at a price that is above what they value them? Who is a committee to tell a team what price they should value at?
The owners would never agree to a proposal of valuing players. If they did the players union would want to severely increase max salaries because how do you put a value on what a player like Lebron, Curry, or Durant is worth? Why should a player be forced to take a certain amount of money at a minimum from teams they don't want to play for when they are willing to play for less to play for teams they do want to play for? This proposal stands zero chance of ever making it into the CBA.