What about attorneys who reciprocally endorse each other on web sites intending to deceive people who are looking for objective opinions? Would that be grounds for a complaint?

Good question. I am not sure about the answer. If you can demonstrate an intent, you might have something. Having said that, I agree with you to the extent, I see a lot of reciprocal promotion which can make one wonder if it is being made in good faith. I will note that I endorse others, but do not seek endorsements, and my endorsements are based on experience with individuals who are endorsed. I think they can be helpful. As you know by now, it's not easy to find a good lawyer. I hope you have had some luck in resolving your issues.