i figure its a thing for object controled objects but idk much
but id like to see the taller cliffs require some climbing, there chould be certain plants that only grows on cliffs and birds nest
there chould be "footholds" you follow up the cliff, some leading to dead ends, only visable when close to them
and rare chance to lose footing and fall, which chould be just sliding slowing taking up stam with chances to catch on something, improved with climbing axe, climbing boots when stam gone full free fall
when ever archery gets a +1 shooting with arrow chould cause a chance to slip
chould follow goats up the paths on cliffs to help find the way
mountains whould be far more dangerous, and chould add a super perma dungeon atop a big ole cliff in some mountains a dragons lair if you will, once killed takes long time to respawn, super hard to kill, loot, the works
prob alot of work and flawed somewhere but just a thought