You are on the right track. However, PR's do NOT wear you down. What wears people down is how they program everything else.
I'd say almost every single template I've been given to "see if you think this is good" fails because everyone is trying to do everything, every day, every week. So they will do BBB, PR sets, push the Prowler 4 days/week, do BJJ 3 times a week and do 5 different assistance lifts per workout. Also, they do an extra arm day.
There has to be a balance about it. You can do PR sets AND hard conditioning - but guess what needs to lessened a great deal? And guess how you MUST do your conditioning?
You can do PR sets and assistance work, but take a guess on what needs to be eliminated and replaced with other work?
You can do a lot of things but you can't do a lot of things all at once. But I'd say everyone is trying to do that. And after the next book, no one will have a goddamn excuse for being ignorant about programming. I won't even entertain other template ideas - these are them, this is what you do - do it. Simple. All conditioning principles, warm-ups, main lifts, supplemental and assistance is covered. All neatly packaged and easy to apply.
I don't know if this is a generational thing or just part of learning about training. it baffles me though.
5's PRO can be BOTH the base program AND a recovery program. It depends on the athlete/lifter and how they program. For example, if one does BBB for 2 cycles, you can do 5's PRO/5x5 FSL for 3 cycles.
Obviously BBB is not ideal for many lifters, so they might do 5's PRO/5x5 FSL for 3 cycles and do PR work for 2 cycles.
There are literally people doing FSL AND BBB work in the same training day. I never wrote that, never even alluded to it and there is no way anyone can decipher that from one thing I've ever read or wrote.
I thank you for being smart about this. Hopefully this answers your questions.