More Stealth-based gameplay and mob-player pathfinding

Most mobs have an "aggro" range: if the distance between you and the mob is less than that radius, they will detect and attack you, no matter what. Sneaking, being invisible and wearing the mob's head all decrease this range, but they still detect you using this basic rule...

The Warden, however moves to the last known location of the player, using the vibrations produced and sometimes even the smell of the player/mob...

The Warden is generally liked by the community for how it works, looks and behaves

I would suggest making all the mobs a bit more similar to the Warden (but I'm NOT saying that they all should work like it; this would take away the "uniqueness" of the Warden)

Here I have some ideas

Visual Pathfinding

The Warden pathfinds using sound, because he doesn't have eyes. But other mobs have...kinda (skeletons are just bones...). I would suggest that different mobs have a conic aggro area, instead of a circular one, with the vertex being the mob's eyes

Hearing Pathfinding

I would suggest that some mobs, such as Piglins, Villagers, Illagers etc, could also use a hearing sense, in a similar way the Warden uses it: this mobs, would "hear" the player actions, such as eating, walking etc, but instead of detecting and  attacking the player, they would have a chance of turning around, then detecting and attacking the player, using their visual sense

This would make mobs more interesting, but still keep the Warden unique