I love wheel kirby the most of all kirbies and often dream of becoming a wheel
As a experience of being a wheel, building up speed and bouncing off walls goes pretty hard, controlling your speed and moving around is challenging, but what one would expect from being a wheel.
Would be a fun boss rush game if it used that to its strengths, and the boss was the stage itself, and you had to bounce and break through walls to damage it. You want to buildup speed, but some platforming is so exact (not just a pixel perfect way, your movement and momentum can send you the wrong place) that you end up having to stop and properly make the right jump to get through, which feels against what it stands for.
There's spinning, but there's arguably no boss rushing, which is sad. As a "You Are The Weapon" concept, I don't know how I feel towards it. If it were a yo-yo, I'd consider it a weapon wheel, but as a wheel in search of its car parts, I don't dig it very much.