What should be a national park but isnt?

No. Keep Big Sur, obscure. You make it a NP and suddenly the Monterey Peninsula isnt the "end" of civilization for the next 120 miles, nor is Morro Bay/ Pismo on the other end. Suddenly they are the jumping off points for a NP. and the lazy, small town, "time moves slower here" vibe goes away. The hippies living in the hills without running water, go away. The commune culture out there gives way to park rangers and federal lands. Frankly this is how I feel about most places that havent become NPs already. If the NP designation doesnt offer immediate protection such that without it, we would be in danger of losing it altogether, I think generally, making things a NP would just generate unwanted economic attention. Just think of all the fanfare that would surround a new batch of National Parks. Consider how monetization obsessed we are in the modern world, and stuffed to capacity our most famous parks get in peak season. I grew up on the Monterey Peninsula and my parents live in Kauai now. Those two places are currently perfect, and don't need any more attention. People do find them on their own, a giant billboard pointing to them would ruin them--imo.