Since there have been as many different architects as there have been Faldo courses, it would be hard to think of him as having any consistent style or approach. The Rock in Canada, was strictly a Brit Stenson design, which Faldo only saw a couple of times.
He was a great player -- but the jury is entirely out on his abilities as a designer. I somehow doubt he'll ever spend the time to become a force in the business, with his continued play, lobbying for the Ryder Cup captaincy, TV commentating, etc.