Just watched the old video preview of 'Freedom of Movement' and I noticed when Paul Wedgewood was talking about the alarm triggers if you go through it obviously it sounds. I was thinking...what happened to that idea? Honestly that could have been a great idea for certain levels where you can emphasize on S.M.A.R.T. Like the Airport if you go through the alarms if could trigger certain doors to lock for a few seconds , give the location of the enemy if implemented correctly or have turrets pop-out, while having cool downs of course. Or you can have a room where there are laser triggered alarms that will set unless you slide, climb, or vault through to reach a destination.

http://www.youtube.com/watch?v=ZLj17-0oABE