When I was reading this topic, something came to my mind. Have anyone else noticed that in some Karate/Taekwondo/Krav Maga-trainings people are not reacting normally to techniques? They usually bend a little in some direction and let the nage do what he/she wants. They are just like mindless puppets or punching bags...
(Of course I'm not saying that everyone does this)
For example: Uke kicks and nage blocks. Then nage will throw a punch to the face of the uke, pull his head down for some serious knee-kicking. Then uke is thrown to the ground and receives a couple of punches to the jaw. And after uke's kick, he/she stops completely moving/reacting.
A little bit of faking in the start is good, so we'll have some force to deal with. Of course when everyone advances and can deal with a committed attack, then the uke don't have to fake.
A bit off-topic, but please forgive me.