No, I understood the question. I actually do something very similar.
See, I like to split my quads into 4 separate days. It allows me to focus more on each section of my front thigh. Mondays, after a brief warm up on the stationary bicycle I train my Rectus Femoris. Later on this day I also workout the medial head of my tricep (but thats for another post, they're both pushing muscles... you get the point).
On Tuesday, I train my Vastus Lateralis and then do about 20 mins of low intensity cardio (I don't want to burn any valuable leg muscle). I take Wednesday's off because I don't want to overtrain, I can't afford the down time. Thursday's, Im back in the gym FRESH... like a new man. Man, do I really pound on my Vastus Intermedius'. I usually get such a good workout in here. Friday I train my Vastus Medialis and keep the intensity HIGH. I've noticed that they respond really well to 75% of my 1rm.
I really prefer this training split to what the other guys are doing. So what they're bigger and stronger than me. Why waste my time and Squat with heavy weight to stimulate my entire thigh in one compound movement that will overload the muscle with much more stimulus than any isolation exercise can provide?
Besides, I like being able to not make significant strength progress, to constantly add progressive stimulus to the muscle on these smaller exercises... I don't want to get all big and strong anyways.