Since I "pretend" that I can pull 600 still, I do my speed stuff with 335 to 365. 335 because it is an easy load with the 2 100 lb plates and 2 45s and so I have to pass through that whilst unloading, so I'll usually stop there. 365 because, I can still keep up my speed for 6 - 8 sets.
Given all that, I look for consistent bar speed for all reps/sets, with a good bend at start-of-pull and a bit of a whip at the top, you know bar travels above lockout level an inch or two. If either the bend or the rise aren't there, I'll call that the last set. I don't see the need for chains and all that because, in practice, I have not seen the need for chains and all that.
I've also done this thing I saw some dude on youtube do where I'll use somewhere in that same range (35-360) and see how quickly I can do 20 speed singles.
I think my record was 365 pounds for 20 in 4 minutes 25 seconds.
Getting back to your observation re "Nobody who's a strong puller neglects any of those components, but there are a lot of differences when it comes to how it gets structured in training", I've seen where some published programs ask the trainee to not try and do each element at the same time as I do, because, they say neither hypertrophy, nor strength nor speed can be optimized for rate of development if they are done simultaneously. Body can only adapt to one thing at a time.
But if I need to do hypertrophy for 4 months to optimize it, then power for 4 to optimize it and strength for 4 to optimize it, is that any worse than doing them all at once and, perhaps, developing each at 1/3 the rate? Still takes a year.
Okay, I used a shoe horn there to normalize the two approaches, but, whether I am right or wrong, get my theory?
I wanted to be ready to go. I mean, if I found a contest which was 3 weeks out, I could easily prep for it because my cycles were only 5 weeks long and I could bail out at any point without any big performance hit.