Suggest adding a new variable that could change the game somewhat. In addition to green speed, why not add the green condition...for example: soft, normal, firm and hard. This would change the way the greens receive shots and would make a player modify their approaches and the rate of spin a player may apply....or, the type of shot they hit. It would be a new twist that might change the same old holes and approaches a bit and offer a bit of a new challenge.