One thing I noticed on Kingdom Island is the difference of the views of locations on the map, than how they are if you are actually in the room. I understand that you do not need every detail that you can see in the room, in the map perspective, however, I would try to fix just a few things.
The Castle:
Okay, in the castle room there is a central cone-like pillar with a maroon roof, and then 2 more pillars on either side. However, on the map, you only see 3 pillars with roofs in total, which does not captivate the room space.
The Theater:
On the map, there is a tan colored object that is at the top of the building. When your dragon is in the room, you are magnified where you can't see the top of the building and what that object is. The "Dragon's Theater" message can not be seen on the map either.
There are a few other little things that I would be nit-picking at, however, if you look at where some of the rooms are on the map and the area that surrounds them (for example, grass), it wouldn't make sense to see water close by when it's not even seen on the map.
So yeah, the map should correspond as best as it can with the actual buildings with what is noticable, without an absurd amount of detail and, the surrounding ares around buildings (such as water, sand, grass, etc.) should be more relevant to what you see on the map.