While visiting the Cruden Bay area on my Scotland visit in October I had drinks one evening at the Udny Arms hotel bar with a Cruden Bay member. He told me CB is considering some changes to the back nine, namely adding a new par 3 behind the 12th green/13th tee that would play straight down towards the beach/North Sea. This hole would replace the 15th, the longish par 3 that plays over the shoulder of a large dune/hill. He also said they are considering moving the green on the par 3 16th to the right, closer to the beach.
I don't know if anyone else has heard of these proposed changes, and I don't have details as to who, when or even if it's more than talk at the moment. I think the changes could be very promising since (a) the new par 3 toward the beach would certainly be attractive a la #17 at Pebble Beach, and (b) I didn't think much of #15. I like #16 as is, but could see how it could be improved too.
Best,