I like most of what he proposes, and I think it shows that he IS thinking about average players and not just pros.
I think having more par 5's is great for average players because it give them permission to lay up. Put most golfers on a 480-yard hole, and if it is a par 4, they will believe they have to go for it in 2, because of the par number. If it's a par 5, and they don't have a great lie, or whatever else the case, they will be more inclined to lay up and leave a wedge approach.
Also, having six par 3s gives more opportunity of hitting approaches off a level lie, in fairway-length grass. So, while he is having you hit off intermediate rough on most holes, you now have 6 holes where you are guaranteed a perfect lie, on fairway turf. I'd love to see 2 medium, 2 short, and 2 long holes. I think something we often forget is that in "golden age" architecture, they weren't afraid to hit woods and even drivers on par 3 holes.