Nickmitch: That is what I was thinking. I have always played Smash for the Single player experience first and for most. I loved Melee's Adventure mode, and I am sure I will tackle more of the Spirits adventure mode after finishing the Classic mode with all characters. But Break the target was a fun special treat. It made Smash Bros like a puzzle game, a racing game, and a speed run game all at once for the regular gamer. It would extend the gameplay and replay value of Ultimate even further.
Yeah ideally you would have a different puzzle for each character. Though that may be too much, so I could see them building types of levels. Something like one for floating types, one for Fire Emblem Types, etc...