Unless you have a Rain Man-like attention to detail when it comes to drawing on the DS in tiny boxes, I find people usually end up just playing as one of the template characters, completely ruining one of the games only selling points.
The fact that you have to unlock colors and patterns for your character by playing the game is also pretty jank. You should have all the tools necessary to make whoever you want from the start.
That and the RPG-like overworld parts tend to be overdrawn out and take forever to skip through to get to the platforming levels.