The main idea for this world was to show off a self-locking Door I believe I've created (I'm still not sure if it's been done before) Essentially when you close the door from the inside it locks so that the door can no longer be opened from the outside until it is re-opened from the inside. The pressure-plate version of the door has 2 drawbacks;
1. It wouldn't work with more then 1 person unless you change the setup to buttons, plus someone might lock everyone else out or some crud like that.
2. There's a chance that a mob might be able to trip off the system while you're out having fun in your mines or something. Just a chance, depends on the location of your base/door.

I figured it would look nicer if I applied it practically so I built the door as the entrance to a beacon fort in which the beacons are turned on at night for travelers who have strayed to far out before sunset. (it doesn't use a day/night sensor to activate the beacons but the device is built into the map.)

I will probably add some sort of tutorial to show the basics of how the door works (I'm warning you now, I'm terrible at making my wiring compact so you'll have to do that yourself.)
Anyways, hope this little red stone door is of use to anyone.