Imitating a move already lined out for you is not a very good way to learn. All you learn is that, oh if I do exactly this I can get exactly what somebody told me to do.
Comprehensive explanation of the tori's body and how the joints interact with each other truly teaches you how to move effectively. And it doesn't even need to be complex. Simple stuff like the lumbar's movement during a kick can result in significant changes to where the point of contact is.
What you need to teach is not what everything does specifically, but the fact that every joint is important to the whole. They can learn what everything does on their own time through trial and error. What they need to be aware of though is that what everything does, only does that because the rest of the joints are moving in the right way to make that happen.
Basically, you can focus extensively on the legs during a kick, and you will accomplish very little with that kick. Bring the rest of the body into the equation, and that kick can become something out of this world. Simple replays to prove it would be the basic extend hip, contract other hip, contract knee kick, followed by a rotated chest kick, followed by a fully-developed kick.