But Chorus Kids are 3 characters (Which would be a huge Middle Finger to Ice Climber fans) Do you mean you want Marshal?
Absolutely not. I'd really dislike it if Marshall got in.
Yes, there are three, but they do
not have to function like the Ice Climbers. Instead, they'd share one giant hurtbox, but instead make up for it with having seemingly wacky disjointed hitboxes, especially if they could add a rhythm mechanic into the mix.
Marshall's honestly dull. I feel the Chorus Kids are a far better representation of what Rhythm Heaven is all about. That, and they're much cuter.