I have been tying flies for over 30 years now. There have been many great patterns designed. Try looking at Mary Orvis book and see if anything today resembles what it did back in the 1800's. Look at the old Catskill flies and see how simple they were.
Turn of the century flies were streamers, dries, wet flies, and full dress salmon. Nymphs did not even come about till later. Who even tyed a saltwater pattern then?
New materials spawn new designs, that is the great thing about evolution.