I'll probably continue to put up some pieces in these various old "systems" and "methods" but so much of the history and explanation of them is muddled and subject to individual interpretation. The best I can do is try to give a overview of the central idea of most of them.
Yes. Please don't stop. This stuff actually takes me back to 2005-06 when all this became the fad over at bb.com where I moonlight on the side :-P
The funny thing here is that at quick glance, if you were completely new to SDT, you'd think this was pretty similar. However, this and other ideas of it's time was based on the idea that you had to slowly build tolerance to a load, by adding reps, before adding more weight. It is very much similar to the classic periodization model, which is linear in the same way. What people call "Western Periodization."
Yes. Actually, I think Kanishk has done something like this for a few of his lifts when he did not want to handle them with the same level of aggressiveness as SDT. He just added 1 rep to the overall volume and after adding like 10 reps in total (over a few sets) he would bump the weight up a little bit. It was for smaller exercises like facepulls and such. Inverted Rows as well, I think.