They could add a category called "All Stars%", basically you have to get the 3 stars of the game. It's an idea that occurred to me at 1 am lol

that's just gold times% if i'm not mistaken

Speedruns for the Karting races in the arcade world

There are a bit hidden, but categories for races already exist! You can find them in category extensions.

Podrian añadir una categoría de todas las coleccionables pero como si fuera speedrun osea conseguir los tres osos para posteriormente conseguir las coleccionables matando a los jefes, osea un juego desde cero