Tom Doak,
Hitting driver off of the 10th tee would seem to create a safety issue as well, and a golfer, failing to drive beyond the dune would be left with a very blind shot over a very high dune, to a green hard by the Ocean.
Thank goodness JakaB's suggestion isn't a reality, as the premiums on your liability insurance would be unaffordable, causing you to seek another avocation.
And, we KNOW that the 10th and 11th holes are sensational, we have no such evidence that a par 4 in their place would be their equal.
And, JakaB has yet to tell us where he's going to insert the missing hole, unless he wants PD to be a 17 hole golf course.