Kamina
Golden Boy
I think durability of all wepons needs to be doubled, Master sword should do as you say, and there should be a way to actually repair damaged legendary weapons (like theMy one gripe about the Master Sword is that I wish it was recharging when I am not using it, not just when it's broken. If it's low on energy, and I want it for something coming up, I need to break it then wait.
Trident, the Bow, the Gerudo Sowrd and Shield and the Hammer)