Fed will only improve physically from now on, his back getting stronger with each match. He is just in his first phase of domination clay, he's about to enter the second phase of his career where every win on clay will be in straight sets for Olderer, never being broken. You can expect another 4 Basel titles. He will also start his domination on clay, and by the end of this second phase he will be known as the new clay GOAT. This second phase should start next season and will likely last 50 to 70 years, featuring 30 more titles at both the Luxembourg and Basel and a 6 year being undefeated at Rotterdam. The third phase of his career will last for another 100 years after that, years during which Olderer will only win 6 slam titles a year, but he'll still remain #1 in the rankings based on his record setting 10 straight seasons with 8 Dubai titles. Not counting his 3 additional silver medals.
Well, imitation is a form of flattery, even when very poorly done and missing the point of the original that one is trying to imitate, I guess.