Ok, after a 2-week timeout from Elevator development, I've finally coded in the basic functionality of Elevator path brick detection.
When moving up, if the Elevator detects bricks in the way, it'll go to the next floor down.
When moving down, if the Elevator detects bricks in the way, it'll go to the next floor up.
This quick video shows me taking the Elevator up and down, showing you exactly how it appears in-game. The Elevator also detects bricks when returning to the ground floor automatically, as you can see at the end of the video.
Enjoy.
http://youtube.com/watch?v=ztiimqvaSsk