The maze problem:
	Edges were only checked one direction in cancel_list
		Solution:  Check in both directions

What if we removed a few extra panels?
	Say, 5 more after we're fully connected with no cycles?

What if we stop short and don't connect every node?
	Then we have secret rooms
	Can we mark them somehow?
	We'll have to figure out if a room is disconnected

What if we stop once there's a connection to a particular spot?
	It'll be sparser farther from the origin

Buildings!
	Unlike mazes, landscapes, and fractals, this isn't a classic CS problem
		Not like mazes, where there are a half dozen well-tested methods
	There IS prior work here, obviously
		Like Minecraft
		Or CityEngine

So we're left a little more alone here than with other tasks

A difficulty:  Buildings are designed
	Landscapes are kinda procedural anyway
	Same with plants
	Buildings are designed for a particular purpose
	Pieces often have a structural purpose
		Or are a skeuomorphism
		Shutters that don't shut, brick facade, etc

Can we dress up our maze algorithm as a building generator?
	It'll need a roof of some sort
	A floor probably shouldn't be bigger than the floor below it
		Usually, but not always true of buildings
	Might be good if it had a pitched roof
		Maybe later
	Windows:
		Easy answer:  Exterior might have a window
		Could model this as a hole
			We could say it's a ruin...
		Could also have a window in the texture
		Partial transparency is possible too
			We haven't really done that yet
	Added bonus:  The interior will be explorable

Materials and product photos:
	A lot of the time, they're actually pretty good textures
	Usually copyrighted though

Lab on this: