If you're going to make a competitive map, or any other type besides aesthetic, you'll run into some problems. Any projectiles fired will not go through the teleporter, and there will be a space inbetween the rooms where you cannot see or hear what's happening on the other side.
nice. i have a hard time swallowing the uncertain fact that reach'es teles wont have a set direction of exit out of a teleporter... dont know if that is true or not, but just will make things harder