Kit that makes a hell of a lot of sense, you've explained a very ambiguous topic with a good deal of accuracy.
Using volume to progress is essentially the way I approached my lifting while I first joined this site, in my 'Fazc's Log' thread. I reflected on my experiences here:
Increasing Weekly Training Volume - Muscle and Brawn Bodybuilding, Powerlifting and Muscle Building.
Also for further reading into this, if you research Doug Youngs style of progression he had some very interesting ideas on this related to his powerlifting.