[thalur]

It seems to me that you have introduced an unnecessary third party to the problem (the agent) that holds the same power and position as the current problem party in the copyright arena (the publisher/label). The interesting development in recent years has been the removal of this party from the equation (self-pub ebooks, kickstarter etc.) so it would be a shame to bring it back.

[ars]

I would solve that by either not allowing exclusive contracts (so a contract is only for a specific performance) or by limiting all contracts to a maximum of one year.

I would also legislate that all agents get the same percent of the donations as fees. Not sure how much, but under %25. By not having to negotiate this part of the contact agents would be motived to compete on quality - things like how often they would advertise, how good the venues they could get, etc.