"Do you think the 10th hole would be considered great if it were 380 yards long? 420 yards?
There usually is a single over-riding factor that makes a hole great and in the case of the 10th, it is its length ... or lack thereof ..."
Mike, re your above statement:
Perhaps there is always a single over-riding factor, I suspect there is sometimes more than one though.
But IMO, there is no such thing as "lack of" length - 10 is great and one of the reasons is it's length, along with angles, bunkering, green slopes and size. I think lack of length implies some lesser architectural values.
I think 4 is also a great hole because of its length ( along angles, bunkering and green slopes and size, ) not because it has too much length...