Joey-
There is no way to determine what the future holds for advancements in valve surgery. Some things evolve and become routine, and some things are tried out and then decided against.
I agree with Ross, deal with the present, not what MIGHT happen in the future. His surgeon was a wise man.
The most important thing is to get your heart in good working condition.
Trust me when I say that multiple surgeries have quite a set of problems, even if the surgery itself is successful. Your body might not react to recovery like it once did when you were younger.
My husband has had 5 thoracic surgeries (3 heart and 2 lung). He's just about "surgeried" out.