Really love the Deteriorating Falls! Maybe a map with various heights for the heroes to jump around? I’m feeling you could come up with a lot of map ideas to try verticality! Like, what if your players decided to go down that crevice?
In the same vein, what about a layered map? From the top of the tower to the secret basement? Maybe give that tower a weird shape to justify placing some rooms right or left and around the top? Or allow the GM to randomize the rooms, perhaps? 
Aside from that, what about a multi-part map that is the same area but at different epochs? From golden walls and roads to covered in nature to flooded to frozen? With that one, you could test various opening zones like the main frame at the earliest era to dropping in from above when it has been absorbed downward into the ice? As well as various cover positions through time.
What about a map that is affected by the way that you tilt it? You could play around with giving the walls various grips or dangers, perhaps even making it just a bit of a labyrinth?
I know those aren’t rooms, exactly. So, now, I will move on to them: what about a map with a circle of standing stones in different variations: a Z, an X, an O. And depending on your mood, they could all be connected to the same hint of magic. As well as various conditions: some of them are buried in a lake, the other formation is at the top of the hill, allowing the GM to make a defensive encounter where the players have to activate the stones will defending?
I think a testing area for robots or weapons with an elevated platform for the scientists could be a really cool, tactical place to be. Plus, you’ve got weapon racks lining up the walls for your players to hack and test! 
You could also try multiple configurations of roads, rail roads and highways to see how you could contain, trick, trap and propose rewards to your players (you know, so they don’t leave at the first sign of trouble? XD)
