One of the most important factors of TEM is that it should never stop! The process of thinking ahead, anticipating threats and erros and putting in place management techniques is on going. It should start before you even leave for the airport and finish on your drive home (self critique is a great way to improve)
My biggest gripe with all students, Jet and piston is the mention of threats in the briefings because "I must use TEM" but that's it. Don't forget the critical phase of management. What good is anticipating threats and errors if you don't mention how to manage them?? As someone else has stated there is no point rhyming off the "standard threats" as this goes against all described above!
I think it is a great tool that is the basis of all training / flying.