Twilight Princess Link doesn't use Bombchus and Bomblings are only an optional item in TP while the Ball and Chain is required and is very useful in the game.
Also, a point in the Ball and Chain's favor is...it's ****ing cool.
coincidentally it's found in the ice dungeon
Actually, now that I think about it, Link exclusively using Twilight Princess items in his moveset would be cool.
Neutral B is Bomb Arrows, arrows that explode on contact, but explode on you if you hold them too long.
Side B is Gale Boomerang, the same.
Up B is Spinner, which has poor vertical distance but hits many times and goes far horizontally.
Down B is Ball and Chain. Hold the button to ready it then toss it for massive damage. Pressing the button again pulls it back to hit twice.
Again it fits Link's focus on power, but lacking recovery.
Also it'd be cool to see some of the hidden skills incorporated. Like the Helm Splitter, Mortal Draw, Finishing Blow, and Jump Strike.