Help me, I can't say "no"!! Seriously, that sounds like something an addict would say.
You're the one who isn't getting the point. The ends do not and ultimately cannot justify the means, and if you use indirect means your opposition will just work around them. Trying to "backdoor" a solution will only result in a backlash. You won't end up with a 70% solution or a 50% solution; it will still end up back at the 0% solution and all that will be left will be the 100% collateral damage resulting from the law of unintended consequences.
There are solutions to slow your clients down, but the only way to address their behavior is to approach it from their end.
When we wanted to stop the requests for "re-addressed appraisals" what method turned out to be the most effective? Was having the appraiser inform them that USPAP doesn't allow misleading reports effective? No it wasn't.
OTOH, shoving a copy of the letter at these MBs from the federal banking regulators and addressed to the lenders reminding them it was against federal banking regulations to accept re-addressed appraisals, well, that actually works quite well. I dunno about you, but when I use the right tool for that request it works 100% of the time AND I still get to salvage the client relationship.
As far as the public trust is concerned, the only thing that will improve that is when appraisers commit to saying "no" as appropriate, whether the pressure comes at the beginning, middle, or end of the assignment. Playing word games with "comp checks" is like rearranging the chairs on the deck of the Titanic. It will never solve the underlying problem. Ever.