If there was a concern about technology influencing performance at the pro level, then the golf ball would be the easiest way to control it. The handicap system isn't perfect, but it's as close to perfect as we can get. As is, a pro can play against a high-handicapper and have a good game. That's great, and that's why we must all play by the same rules. Without too much restriction though, we can make clubs that are easier to hit straight, which will make the game fun for more people.
Golf is a game of finesse and short-game artistry.
Long driving will never significantly lower the average score, and there probably will never be a driver that provides a tremendous amount of extra distance, particularly on off-center hits. One of the things we're trying to prevent is technology taking the place of skill. But golf is a difficult game, regardless of technological advances in equipment, and it's unlikely that any particular golf club could greatly affect the average golfer's handicap. There won't be one advance that all of a sudden makes scores go down. Certainly, spring-like effect in itself doesn't do much.