The system is well and truley broken - the whole idea of COBT (In my mind) would be to eliminate enroute delays, and yet I lose count of the number of times we taxi off exactly on time and still cop a slow down enroute. Not to mention the "reduce... reduce... reduce... oh, uhhh max speed cancel speed restrictions" trick (or vice versa) that the turboprops always seem to cop in the terminal area.