Sam Presti has long had the rep of being a great GM... but over the last several years has he even been average? Is he just a guy who lucked into Durant, Harden and Westbrook... then proceeded to piss that away?
The Harden trade was an unmitigated disaster, they gave up a top 5 player for virtually nothing and did so because of a 10 million dollar gap (2 mil per year) in contract negotiations. The Carmelo trade was dumb, I'd rather have Enes Kanter straight up, and he'd fit better on that team. Even the Paul George trade isn't looking so hot, as Oladipo is playing like a true superstar in Indiana and Sabonis has been excellent.
Their tinkering and pursuit of big names have left that team with almost no depth. If George leaves this summer (and I would say it is likely he does) they will have lost Kevin Durant, James Harden, Victor Oladipo and Paul George for essentially... nothing.