I wanted to give some input I have noticed while doing research on advanced stats. Feel free to critique my observations and add your own thoughts and findings.
In particular I want to talk about the BPM stat that is most commonly found on basketball-reference.com
It's one of the better "all encompassing" stats that there is out there. I mostly prefer it over PER, NBA.com's PIE rating and certainly over the dated Win Shares.
However just like every stat it has its flaws.
First of all, it's a stat that heavily weighs team performance. So good players on bad teams get the short end of the stick and vice versa.
Also it seems to somewhat overrate blocks and especially steals.
Finally just like most of the advanced stats out there now (outside camera tracking numbers), it doesn't take into account the situation the player was in. Because of that players who are good half court scorers and are good at making hard shots are sometimes underrated.
For example DeMarr DeRozan is the go to scorer for the Raptors. His shooting percentages aren't high at first look. However that's because he doesn't score a lot in transition and isn't a great spot up shooter.
But he often bails the raptors out when the opponent plays good D and they need a contested mid range jumper. Of course his percentages are lower but it's not necessarily because of bad shot selection. Someone would have to take that low percentage shot anyway but DeRozan is the one that takes it because he is Better at them.
It's kind of tough to articulate and I hope y'all understand what I mean and aren't too confused.
Finally, i stopped looking at assist numbers all together and now mostly use the adjusted assists per pass numbers that NBA.com has in there player tracking section.
Hope that's helpful and feel free to add on