This brings to mind two Michael Hurdzan quotes.
"Architects decide the length of a hole, attorneys the width."
"There are no accidents in America."
Tom P.
What you are referring to is "assumption of risk." Attorneys in California seldom let that slow them down in filing lawsuits. They jump right on negligence in design. I have had that happen several times at my little course. I think what could happen as a defense of negligent design is for a creative attorney to point out how the ball distances have increased and relieve the designers of liability by pointing to ball manufacturers and the USGA.
In a lawsuit at my driving range, a neigbhor's attorney implied just that, but he was referring to graphite shafts, not the ball, as the culprit. In discussions of a summary judgment, the judge told him he had better have some good documentation on that. It was eventually settled out of court. They got money and I got the shaft!