Tom I --
You write: "But still a 'competition' ball would be the first time the rules making bodies have departed from one set of B&I rules--or any set of rules, for that matter. And this 'competition' ball is only to solve the problem that the Tour pros are hitting it so much farther today, right?
"How about a 'Tour' ball for tour professionals if they're really the problem and maybe the only problem? Aren't they the ones these courses are getting redesigned because of?"
I honestly don't understand your reluctance here. Would having two sets of B&I rules -- one overall set, for golfers at large; one set for competitions sponsored by the rule-making bodies (a set that the professional tours and other tournament committees could adopt locally) -- threaten the health of golf in some way?
The fact that something has never been done is absolutely no argument that that same something should never be done. If the USGA and the R&A were to accept that never-been-done-before view as a trumping argument, it couldn't have implemented any equipment rules in the first place! After all, before there were any equipment rules, there had never been any equipment rules!
I believe it's not JUST the PGA Tour professionals' length that jeopardizes the classic designs, and that makes necessary longer and longer, ever-longer and more expensive golf courses. It's the top amateurs' length, and the college players' length, and soon enough the LPGA players' length and the Senior PGA Tour players' length.
A Competition Ball solves all of the problems!
One more (unrelated to any of the foregoing) argument for a Competition Ball: Wouldn't it be FUN, Tom (and all of the rest of you), to play in some events -- as amateurs -- that required all of the competitors to use the same Competition Ball? Wouldn't that be fun in the same way, and for the same reasons, that it's fun to play in, say, a 7-Club Tournament? I say it would be -- and I can't wait.