Pathfinder Map Pack: "Labyrinths" [RPG]

I took off the cling-wrap to Labyrinths last night and used it for the first time in a session.  The adventure I was running says there's a labyrinth full of traps and monsters the PCs have to navigate but provides little in the way of detail and no map of the labyrinth, so I thought it was a good opportunity to test out the map pack.  Essentially, the cards in the map pack are a bunch of narrow, one-square wide stone corridors branching off in multiple directions on each card.  Depending on how you configure them, you could have a path through to some goal or just a bunch of dead ends.  The corridors are fairly plain, with some occasional subtle details like an arrow or a cracked tile--nothing to write home about.  Honestly, I'm not really sure there's a lot of use for them apart from something a GM can slap down on the table when they need some narrow corridors and don't know what else to do.  I guess if a GM planned carefully and set them up ahead of time, they could construct a path through and have all the cards the PCs aren't currently on be face-down to help emphasize the "labyrinth" part of the cards.  So, mildly interesting but definitely inessential.