Having a skin for the ball that makes it look like you’re actually running through levels instead of rolling inside a ball is something I always thought about when playing Ball Race. I feel that if it gets added, it should be an item you can only buy once you reach rank 100.
The only inconvenient I see about this skin is the fact that it might be hard to tell where the edge of the ball is (since I assume it would have the same collisions as any other skin) meaning that people might accidentally hit bumpers while using the skin because they don’t see where the edge of the ball is.