The safest method is, of course, to have captain monitored take offs in all cases. Capt monitors all parameters and can call an informed "stop" or "continue".
"stop" means "i have control" and captain stops the a/c as trained. "continue" means FO continues as they have been trained.
It is very simple and obvious but.....
This won't happen because pilots like to take off.
Sorry if this puts anyones noses out of joint.
