I didn't add any bow or staff options but added several armor, weapons, and shields. When you open a chest it selects an item from a tier of items. There used to be 10 weapons (club, dagger, sword, heavy sword, spear, great spear, bow, longbow, staff and master staff) and 12 armors. I increased that to 38 weapons, 8 shields and 32 armors. This greatly reduced the drop rate of bows and staffs. I added noncraftable bow and staffs to increase the drop rate.