Pilot or Controller?
There must be a fine dividing line between being a controller and trying to tell the pilot how to fly his aircraft, I am very wary of imposing a rate of climb/descent, and my understanding is that a high rate of descent coming into the much thicker air of the mid 20's will start to cause a rapid IAS increase...with some types this is not what the pilot wants. There are alternative methods of getting a plane to the right place at the right level.