I'm not so sure about the height of the rim, I'd like to see a trial on that. What I WOULD like to see is the width and maybe the length of the court increased, especially the width. When the zone became a legal NBA defense, it really emphasized how little room there is left in the half court when all 10 of these giant guys are on one end at the same time. On offense, there's really no room to spread the offense or set up a high and low post, because either the two offensive guys take up so much room that they are in each others way, or the defensive player is so big he can guard both players at once.

As for the height of the rim, I once had a woman tell me there was nothing appealing about 7 foot tall men with three foot arms trying to put a ball in a 10 foot basket, but my reply was there were guys just as big trying to stop them. Shooting percentages have not gone up significantly as player size has increased, so it's no easier to score now, but perhaps the entertainment value of watching guys dunk on a 12 foot rim would be worth it.

There have been a few encouraging experiments that indicate a 12 foot or higher rim might be good for the game. New York city's Johnson Park decided to just go for it, and it seems to be working fine.

http://sports.espn.go.com/espn/page2/story?id=5041079

Coach Tom Newell (former assistant for the Super Sonics staged an exhibition game with 11 foot rims at the University of Washington in 2007. Most of the feedback agreed that higher rims made the game into a more fundamentally correct team game as opposed to a game dominated by athletic individual efforts.

http://familysportslifetoday.com/ForLoveOfGame/

Interestingly enough, the idea of raising the rims has been around for a LONG time. Sports Illustrated had a feature article on the subject in 1967 (told you it wa a long time ago). At that time, Coach Jack McClosky of Wake Forest was a major proponent, but he got very little support. Even John Wooden thought it was silly. Getting coaches to support it has always been, and still is, the main problem. I myself would like to see it. Coaches have too much riding on the outcome (their careers).

http://sportsillustrated.cnn.com/vault/article/magazine/MAG1080641/index.htm

Want to go back even further? Coach Phogg Allen of Kansas, 1955, if you can believe it, wanted to raise the rims to 12 or 15 ft. Of course at the time, he had Wilt Chamberlain as a freshman who was still growing and could easily dunk on the 12 foot rims. Check out this fantastic source (Prescott Courier, Dec 13, 1955)

http://news.google.com/newspapers?id=JOoKAAAAIBAJ&sjid=BVADAAAAIBAJ&pg=6097,1789541&dq