This is a super-minor request: Take the keychain out of inventory. You don't need to sell keys and can make them weigh nothing, so just put the keys on a shared keyring that you never need to manage again (and that doesn't take up a slot in inventory). Other minor quality of life improvements could include a potion belt, scroll pouch, ammo quiver, and stackable thrown weapons (like daggers, javelins, and hand axes).
