Unlike down the road at MPCC/Cypress/Spyglass/Spanish, the land at Pebble is not naturally sandy.
In theory, the look of the seventh green surrounded by sand-swept dunes always intrigues, but there's a photo in this collection that I'd never sen before that kind of proves to me why they went away from that look and why it's the wrong way to go at Pebble.
The aerial photo, under the heading The Sixth green, looking down at basically all of Arrowhead Point (six and seven greens plus eight fairway), shows how Egan created dunes bunkers around those greens, even though dunes don't otherwise exist in the area. It looks ... not good. And it's very easy to see how such "created" areas would have been very difficult to maintain.
There's a lot to not love about the look of PB as it exists today, for sure. But what I'd like to recapture from these old photos are the bigger greens and some of the more wild and woolly looking bunkers (I really like the Dr Mac look of some of those bunkers on 8 that's gone gone now, not to mention that Egan "hanging" bunker that almost ends up on the beach!). But you can't do a "Pinehurst" here, because there's not natural sandy ground to uncover if you limit the irrigation. And building fake dunes in a few spots looks, honestly, even worse.