Sir,
I think it is very strange to say there are hardly any games of morphy noted. First Morphy travelled around the world and challenged anyone for game of chess to see if anyone could match him. So he played many matches. It would be very strange if they were not noted. Also he played for the championship of the USA it would be very strange if these matches were not noted. And there were noted. I posses big work containing hundreds of matches of morphy including 1 of the few matches where he did make a real mistake complete with sidenotes for the sake of the study of chess.
Also calling Morphy the weakest of the strongest players is very strange. Noone was near matching him in his age. So calling him the weakest of the strongest players is also calling his age the weakest of all times while it produced some of the finest evergreens. I can not combine this.
I hope you are not going to deny the very existent of Morphy next.
Ofcourse Morphy didnt make or change chess rules. Most of us may think chess is so rich its development may never end. But Morphy and Casablanca shared a total knowledge of chess. Both found chess boring. But Morphy combined and developed and showed us all logic principles. The only thing we do nowadays is finetuning. Even the computer didnt find new priciples. Morphy brought us near the very egde of chess. Currently almost everybody could become a gm. This was certainely not the case before Morphy.