If students know that their everyday performance in all skills will move them forward they will work harder in class. Put testing parameters with time required as the deciding factor than most will just work towards that. In the end you will have substandard martial artists. That is what we as a martial arts society are seeing.
My thoughts exactly. The kind of dogmatism we see in most martial arts instructors these days is really detrimental to the quality of the art as whole. It's a sign of a bad teacher. If one needs to dogmatically stick to some time-constrained rubric, than one does not have enough confidence in one's own judgement and consequently has no business teaching.