So wait, wait, wait. What exactly does "debug" mean? What is it for and why should we care about this, aside of serving as a view of the game's development?
So (to my understanding) debugging basically means to look for bugs, meaning any defects, in the whole game's programing and fixing them all of them as much as possible. This particular debugging prototype was used to assess the programming of the game during Rockman DASH 2's localization process into Mega Man Legends 2.