There’s already Survival and Animal Handling. How much finer do you want it sliced? Do we have to go back to the days of Move Silently and Hide being discrete? Listen and Spot Hidden being separated skills?
Pathfinding
Foraging
Tracking
Split out of Survival, with Survival itself covering camp-making and general wilderness knowledge (Nature poofs out of existence in a spasm of logic).
Meanwhile, Animal Handling and Herbalism take on their own forms as more elaborate crafting and taming mechanics get introduced that will be beneficial to a wide range of characters, not just Wilds focused ones (such as Rangers, Druids, Beastmasters, and Hedge Mages).
All of these steps are not only essential for delivering a mechanically defined and interesting to explore Wilderness, but also provide much the necessary steps to not make the Wilderness
only for Wilds specific classes.
Those skills split out of Survival would be beneficial to a wider range of characters than just the Wilds specific ones, and more importantly it makes better logical sense as theres no reason someone skilled in only one of those skills would automatically be just as competant at the next. And in an even more ideal set up (like Ive created), even non-Wilds classes would have a good reason to, if nothing else, dabble in these skills, even Survival, because they get benefits from it that they'll want for the stuff they actually want to focus on (like better stats).
A novice alchemist rummaging in the woods for ingredients isn't going to be able to track down a wild animal, and likely isn't going to know much about navigating or staying alive in the woods than the bare minimum to not trip on a proverbial rock and die.
Likewise, a bounty hunter isn't going to know the good mushrooms from the bad ones just because he can track anybody through any terrain.
The Ship Captain can navigate like no others, but is worthless at trying to make a fire.
Etc etc.
(If it isn't obvious, this is all stuff Im doing for my own RPG and these are the reasons why Im doing it this way. DND isn't LNO, but that doesn't mean DND couldn't benefit from some actual effort in these areas for a change)