Hi,
C'mon GJB, as JT already Wonka-ed, you defeated the letter, but not the spirit, of his question. The amount of property bought from ACC to extend #13 back 30-35 yards would still bring the course to only 6980/5 from the incarnations we saw before 1998.
I say to the spirit of JT's question that we HAVE got some idea...we can look to Merion as something of a model, but we can look to AGNC itself as another...#11 for one instance...the hole was reshaped and its dog leg nature nearly obliterated.
But if the most drastic scenario arose and the "unused parts" of the property were unavailable or had been exhausted, I suppose it would be "Trees" and "Rough" first, new hazards next...I'm not as sold that a "Masters tournament" ball would ever have been, or truly exists as an option. I see the sense of it from our GCA perspectives (including conservation and sustainability) and from a preservation of fundamental properties of the game (how like any game, it should direct and provoke you to be better, not your equipment)...but I'm not prescient enough to see how it would work without a broader implementation than the Masters.
I can see modern professionals (as coached, as agent-ed as they are) NOT wanting to re-calibrate their games for one week a year to embrace the properties of the Masters ball; I can see resistance among the ranks for that...all it would take is for one Masters winner to lead that opposition for it it to turn into a fracas that might destroy the tournament of its accord. I think it would take an effort among the international governing bodies (and entities like ANGC) to implement such a ball for their championships.
I do think, despite capitalism, there is a lot of win-win available with a reduced tournament ball and still a continued use of "advanced tech" balls at the public and club level. A bit like aluminum baseball bats, phased out as you reach the higher and higher levels of play - but still in wide use where baseball is played most, in communities and parks. (I recognize that aluminum bats involve a safety component we're not talking about here). In terms of the golf ball, it may even open up a method to feature one's local, club tournaments with a "classic" and "progress" ball divisions or "rules of the day."
cheers
vk