I don't think Pete Dye brought anything really new to the table, I think he took ideas from GB&I and pumped it with 'roids. I think his timing is what really set him apart from the others in that when RTJ, Wilson, Fazio, etc where doing somewhat similiar, linear work, he just did the opposite. When they where zigging, he decided to zag. And did it becuase he knew if he didn't, he wouldn't stand out from the rest.
Tom, this is a very difficult question to answer. If I had to point to one, I would say Colt. But then again as Peter said, alot of designers were "Modern" (whatever that means) at some point.