If you are a swordsman you can make a sword your signature sword and depending on the sword it can have its own tab with special moves. A swordsmith could make you a high grade or a low grade sword depending on the materials and belly you give him. New swords that you can name and set as your signature sword. With this new addon it can possibly add a way to combine weapons with devil fruits and have their own tab with special devil fruit abilities depending on the type of weapon. Sorry if my grammer isn’t good I wasn’t sure how to word this.