I take it flip screen maze games are the best to convert?
Have you played Drone Strike yet? Drone Strike by The Death Squad
If you collect the 4 pieces of QR code in Basterdale Farm it links to the game, an easter egg basically.
Without the torch there are rooms that are dark where you cant see the spiky balls.
One of the biggest ccmplaints about WTW was the way everything sapped your energy, perhaps you could make the background less deadly for the GB C version?