Some thoughts that I haven't seen yet.
1) Currently the MLS is a public facing, yet member-driven database. Who is to say it doesn't become a closed database? I pay a lot of money for access, so if there is no collaboration between agents, what do I care if the database closes to the public. Most people don't realize that the majority of web sites get their info from the MLS' for almost nothing, including Zillow. It's called the IDX data exchange. In my opinion, close it down. Its funny that I can make a change, requested by as Seller, in one spot, and every real estate website in a short time updates too. Forget that, just allow subscribers-only access, forget the rest and now I can charge whatever I want, because there will be no standard.
2) As others have mentioned, this settlement just says "no advertised rates". In my area, rates have long been able to be negotiated, but now every agent will ask have to ask EVERY seller if they will accept pay X amount. And if Buyer can't pay and Seller won't pay then the Buyer can choose to go it alone if they want.
3) This will just change the order of the conversation. I have long used a buyer's agreement and in it, it says, my rate is X, and if sellers do not want to pay, then Buyers pay stated rate. Everyone agrees, but when I go to show a house by a FSBO, and when a Seller tells me, "No", when I inform Buyers, most Buyers say, "Oh I don't want the hassle." I don't care either way, my fee is still a cost in the transaction.
4) The biggest reasons that agents and anyone in business fails is many do NOT like conflict, many do NOT like solicitations, and many hate asking for money. That's why people love stated prices with everything. That's why many people don't like going to estate sales where are no prices. Most hate to haggle. I love to haggle, let's do this!
5) I see a lot more lawsuits against Sellers for misrepresentation, and hiding material defects. Real estate agents are going to have contracts that are going to save their bacon, the rest are going to flap in the wind.
6) Who stands to lose the most? Buyers because they won't know what they are signing, few actually read contracts so why do we think that will change?
In the end, I will adapt whichever way it goes, but I don't think many have really thought this out.