Here's an interesting thought however - if you look at the ubiquitous Trackman optimal numbers, then not one of them has an optimal smash factor of 1.50. Which begs the question, are they really as optimal as they could be? Anyone who knows anything about fitting knows that hitting the middle of the club face yields the best ball speed. And ball speed is everything.
Actually hitting the clubface slightly higher than center and slighting towards the toe yields the best ball speed. I am talking about maybe at most a quarter of an inch up and over. so center of the clubface isn't the best location to strike the golf ball.
Also, if you miss hit the ball then you are going to get lower ball speed, but higher spin rates. So even if optimal is the perfect strike, getting the right launch angle and matching spin values. Getting close to that is best, because mishitting the ball takes you away from those values. So it still stands that you want to strive for optimal numbers. Mishitting is not part of the equation when talking theoretical.
Ball speed isn't anything. If you have 170 mph ball speed, but launch it at 9 degrees with 3300 rpm, you will only get 285 yards carry.
Lets say you are able to get that launch higher, lets say 13 degrees with 800 less spin, so 2500 rpm, you will get 295 yards of carry. You will also get more roll because the ball will descend at a shallower angle. So the ground will not take out as much energy from when the ball strikes the ground.
So ball speed isn't everything, though it is important.