I'd throw out 13, as it doesn't allow for northern courses to even qualify in the off season, or I guess ANGC/southern courses in the summer.
I noted that very little is mentioned about greens, which surprises me. Just sufficient undulations. With many of his greens being pretty severe by our standards today due to green speeds. Also, nothing about bunkers at all, just reference to forced carries without mentioning what. His bunker maintenance finely cut edges are a characteristic today I'm sure many super's loathe due to the man hours.
I find #5 to be the most ambiguous and catch all in any way shape or form someone wants to point out. "Every hole should have a different character." It is open ended enough that people on this DG could have a unending thread just on this topic.