Personally, I try to build smaller PWPs up there to try and draw a visitor's attention to that area. I've also been considering using it for my final alt.
Mine's basically where that one is, except a little bit wider. I also have one near the cliff by my ocean, but I use it for the campsite. Perhaps yours could be used for the same purpose?
I have one in my town-if I had chosen my map now I would not have picked it but I'm glad I did. I've got my campsite up there, a cutout standee, and a little fairy ring of mushrooms. I've got a little clover path leading to it too, I like it to be a pleasant little surprise for anyone visiting
Rocket and Stinky's houses were right in that area. I'm going to try placing some PWP's near that area so once I get Rowan or Mira, they'll put their houses there too.
I try to avoid getting maps that have those small slivers of land at all, but if I do have one, I usually just put my mule houses up there unless there are nicer places to put them.