The 15th is the Road Hole. The approach shots to the green could be more interesting (my opinion) if the entire fill pad was returned to green surface. An area at the front right, next to the bunker, is closely mown fringe area as opposed to green surface. The area is large enough to affect the play at the green.
Two greens, such as the 11th alps/punchbowl and 17th double plateau, were reworked when the bunker work was previously undertaken by the club/Silva.
Previous work did look to restore the bunkers to more of a Banks/Raynor look and add bunkers shown in the original routing plan. Some bunkers were not completed in the original work or some may have been abandoned in the early years.