The number of .300 hitters nearly tripled in 1969, runs per game went from 6.8 to 8.1 and the overall batting average jumped by more than 10 points. It worked on Gibson, to a degree. Changing the game of golf could be a more difficult matter. First, his awesome length would reduce the competitive balance in professional golf. But the idea of lengthening courses is more complex than it might sound.
Many courses lack enough additional land for expansion, for example.
Then, too, there is the cost. But perhaps the biggest reason to not lengthen a course is that it would play longer for everyone, not just Woods. That may ultimately give Woods an even greater advantage because he could still reach par 5s, whereas other long hitters might no longer be able to. Adding bunkers is an accepted means to change a course and increase its difficulty, and placing hazards further along holes would add not only to Woods' problems but those of all longer hitters. Of course, were Woods to hit the ball straight, bunkers would not come into play.