As an instructor, I feel it depends on the student. Is he/she a sandbagger or are they really putting in the effort or is there a lesson they need to learn. Every student's journey is different. For me personally-quality is far more important than quantity-the repititions will come with time.
I left an association ( I ran an association dojo) because the "master" demanded loyalty rather than earning it through respect and he refused to allow students to train in anyway outside his dojang . Of course, he would charge you for every extra class or seminar in addition to the outrageous tutition you paid-for a pretty basic and impractical system! He wanted my husband ( a Professor of Jujitsu) to become his student-and profess his loyalty to him- in order to cover classes for me at my own school! When I left I told him my thoughts on loyalty and cross training (I "grew up" in a dojo culture heavily ifluence by Choi)....and some of his "loyal" students followed me out the door! Low and behold if he did not have an epiphany...now he brings in other instructors from other disciplines to cross train his students-but only if you pay him for it! I see many such dojo's out there today-it is a real shame!