Indeed for children playing on easy mode and unfamiliar with the RPG Maker, there will need to be something pointing out what to do with the 5th party member (if the easy mode additional character is not outright removed upon acquiring Minerva with the optional Lorent in the party, which I am also considering).
The inferior doppelgänger was meant facetiously anyway, but I suppose it would have looked more polished to remove that event once easy mode is enabled. Alternatively, I could have placed this event in the mirror from which easy mode could be enabled, if I had thought of it earlier.
I am not sure what you mean by the map design of the firehouse. As far as I remember, I only made slight adjustments to a premade sample map ("desert house" this one was called). Are you referring to the green carpet?
If you did not make it to Sunday (day 7, the end of the game), on what day did you leave off? Did you redeem your prize at the black market for completing the prisoner side quest? Did you figure out on your own to pursue this side quest, or did you act off the mayor's hint available on Friday and Saturday (days 5 and 6)?
PRISON BREAK! I know. I could not figure out what to do about that for some reason. At least after putting them in their cells the first time, I have it so you can just dash around to bowl them over like bowling pins as a way of saying, "Recess is over! Back to your cells!".