With 700x35 tires, you've got plenty of suspension built into the front. If you're looking for a bit more plushness to the ride, consider moving to a different tire. I found other tires have a bit better ride quality. Panaracer Paselas are an affordable alternative that offers lighter weight and supple sidewalls. Keep the tire pressure at optimum (not @ max psi). Switching to a carbon fork will lighten up the front end (if that's your goal), but it won't dampen the ride any more than the above. A carbon fork does have its place with narrow, high pressure road tires.