Nice radial menu. I'm surprised at how well such a menu works in general, especially for something like Runes which don't change much over the course of a playthrough.I want to see item management improvements, quick menu especially. So, I made a couple of mockups.
There's way too many separate menus, I want it streamlined. There's no reason why sword and shield can't share the same quick menu, for example. Same for bows and arrows. Durability bar displayed for each item.
Rune Menu, Twilight Princess and Skyward Sword had item selection down perfectly. Radial menu allows for quick selection as items are in a set order, you can memorize the direction of each one.
Combining swords and shields is a good call as well - the quick menu's leave a lot of screen space in BotW, so there's plenty of room to combine stuff.