If you still think about expanding the pack , what about crossbows ? And whips ? And more bows and more arrows (hook, dark, ? And darts with blowpipes ? And parts, like a pendant with 3 parts, so you would need 1 of each part + 1 completed, that's 4 sprites for 1 item.
And of course, a scifi pack ! Well, seriously, is it on your plan by the way ?