Sitzer-Burnett involved a very narrow definition of collusion... essentially one Kansas City MLS had a mandatory input field for a seller-paid buyer commission. Realizing the risk of copycat lawsuits, the NAR got involved and decided to settle. Both Sitzer and Burnett should have gone after their own agents rather than turning this into a national issue.
>My prediction is fees will decrease significantly
And my prediction as an agent is somewhere between "business as usual" and "buyers are going to pay more out of pocket and will find it harder to buy homes." Further - many buyers will opt to not use an agent and I'm already making popcorn waiting to see what a clusterfuck that will be as buyers and sellers sue each other into oblivion.