Just to check are we now on the same page re clubs paying agents?
I agree re players and their earnings and this is where the cap would be useful, in a way by removing the power of the agent (making the player directly compensate them NOT a club with near limitless resources) you protect the player/give the player more control & then I can see a lot more performance based and loyalty based bonuses making up a much larger portion of contracts.
A good example of this would have been, let's say Sanchez had been signed and our cap was £250k (in reality enough to attract almost any player) and the rest was in performance based bonuses, it would still have been a terrible and expensive free transfer but it would have the cost the club multiple millions less. Even if the 'savings' for clubs that come from caps are a small percentage it's money that could (although it probably wouldn't) be used to subsidise ticket prices. on the player side it's not as good in that your guaranteed weekly money is less, although most won;t be near the cap and so it's irrelevant to them, and for the superstars like Neymar, bale etc who would be taking the biggest hits they'd just have incredible performance based bonuses in their contracts. As an aside that would immediately stop what's happening with Bale at RM because he'd have to move and play to be earning anywhere near what he's on & would also stop players tying themselves into stupidly long contracts.
