Hi, first post on the forum - after having played for a couple hundred hours (not that much, I know!), I've got some suggestions (more to be added), namely:
Armor
Armor is possibly the "simplest" (from a mechanical perspective) item from all three categories, what I'd like is the ability to mix and match equipment - being able to wear chainmail without a leather jerkin for a reduced protective posture; being able to "up-armor" various suits (plate comes to mind - one of the modifications you could add to the suit is a tourney-style shield and pauldron which increases protection, but reduces swing speed); more armors and armor styles (some of it could be cosmetic in nature, I suppose).
Arms
Arms (weapons both melee and ranged) I think could use a big improvement in both variety and style: swords (short, long, great) of many varieties (curved, straight-edged, double-edged and so on); specialized tools (warpicks, battle axes, halberds, maces, ...); curiosities (repeater crossbows, heavy crossbows, light crossbows, flaming arrows, ...).
Animals
For the animal category I'd like to talk about two different groups, some of them might share wanted features and some of them might have their own unique requests. In general, I think we've a good start in 1.22.
Predators (bears, wolves) - one of the things I've noticed is that they're in general way too quiet. Bears, for example, have a pretty high "aggro" distance compared to their noise radius. This could be improved by increasing the noise radius (if, for example, their aggro is 30 meters their noise should be around 50 meters, that gives, in my opinion, ample warning of their presence) and by also adding more foley sound (foliage rustling, sticks being pressed on, heavier footsteps that are unmistakable for any other animal) without needing to make the bear growl or roar constantly. There's also something to be said about animal behaviors, I think Bears and Wolves should have their chasing behavior revised in the sense that Bears are not endurance hunters, they will not chase you down to the ends of the Earth, while wolves should give longer chase (I keep encountering them and they lose interest after 2-3 seconds).
Prey (foxes, goats, sheep, raccoons, rabbits, et cetera) - some of them I feel I lose track off of too easily and this could probably be helped by footsteps, foley and tracking markers (tracks on the ground for deer as an example or blood trails from an injured animal), which would be immersive and fun mechanically (possible insight bonuses for Hunters??), using your surroundings to figure out where they are.
Still within the realms of Animals, displaced foliage (grass trails, for example) would also be a great help.
EDIT 1: Physics accurate collision would also be a great QoL feature, in my opinion, in two categories - Arms and Animals. For weapons this means you can properly use your range as a hit is detected when the actual tip of your spear (for example) touches the animal hitbox, while conversely animals are unable to swipe and unfairly hit you.