I understand how you guys feel about it, but i think that PR levels are fine, the problem is player's age.
Right now, all teams can afford to have CA7 players in their squads, i would say that it's an average level in competitive leagues, if PR changes, that average level will also be increased and bigger teams will have more and more advantage against smaller teams who can't afford LA8+ players easily.
I have a 10/4 and I may not be able to fully train him at his cap even if I had him 17 yo at the very first day of this season with a CA of 3. I should be able to have him CA 9 at his 21st birthday but then he will become TA 2 and I don't know if it will be enough for this last step. If I am lucky enough with the injuries. Now he's CA 4 but also he stopped 23 day for injury.
Picking wich players you should train and how to train them is also a managerial work IMO, when you pull academy players things are a lottery, but when you go to transfer market you can pick injury prone hard players and push them in daily training, that helps a lot you know?
Improving your physio is another way to get faster results, avoiding injury penalties, improving your physio's level reduces training injuries drastically and it helps. High level physio is useless on match injuries (they are too long, you are still pushed to use credits to heal your players) but in training stuff, i find it pretty useful, i haven't suffered a training injury longer than 8 days. Raising young players is not only about PR/facilities/coaches, phisyio is another part of the whole scenario but people ignores them.
And before somebody say that i don't have PR issues: I pulled a 3/10/3 a week ago, i am pretty aware that i won't max him before his PR starts to decrease (he's 19 years old now) but at least i know that i'll have him playing under league standarts at age 21 and he will keep increasing in time. I am also farming a 18yo 3/8/3 keeper (he will stop growin in daily training at CA 5.4) and a 18 yo 2/9/3 MR. So yes, i suffer their PR issues, but i think that i will have them playing under normal values in a couple of seasons, they will shine later for sure, around age 23.
I still remember when i was U21 manager 2 seasons ago, most players were PR5, my experience training them taugth me that raising a 1/7/5 into a 7/7/5 was possible in 2 seasons (i maxed a 1/8/5 in 2 seasons), at least now it takes more time (wich is far more realistic), we can't expect to max players at age 21, in real life a player shows their max ability at age 25/26 (more or less), why would we have LA10 players maxed at age 22?
However, i would accept to reduce players's age a little bit: this season i searched 8 extra players in academy before pulling 8. 12 of them were 18 years old or older (it represents my academy player's 75% ), i have no regrets about their PR (all of them are PR3 or 4) but i think it would be okay to have younger players, at least a little bit (i would be pleased with age 17 instead 18), that would give us a little extra to reach CA7 faster, then our players would still need time to improve but we might get an extra season using that PR3/4 without a penalty.