It would be really neat if arrows *stuck* in the people/animals you fire them at, rather then instantly falling to the ground like a thrown rock.. [they could even do slow damage over time until removed like leeches].
Plus its really annoying to have to pick up 5-10 arrows that are underneith the animal.. if there was a way to "slowly over time refill the quiver from the arrows in a pile" directly.. or anything that reduces the amount of click pick up, click move from inventory to quiver X 10 every time.. would be amazing.