You should definitely add outlining to the hotspots, regions, etc if you're selecting that mode. It wouldn't be too hard, it would just take a small moment of loading time while it traces out the whole background and saves it to a DynamicSprite until you change rooms.
Anyway, it's a brilliant idea. Hopefully it becomes quite useful to some.
Anyway, it's a brilliant idea. Hopefully it becomes quite useful to some.