I think for the money and assets we had left over when he joined, and being forced to sign Kevin Love before the season started (giving up all our picks and most of our young guys) he's done an amazing job. Look at our payroll... We can't just sign someone to better our team. We were committed to this roster and basically had to pay LeBron, Kyrie, Love and TT the money they're owed. Which outside of TT this season are a bargain compared to what guys are going to be making next season and on.
Yes, he let Delly and Mozgov walk, but this team has always been built to play against Golden State. I don't agree with it because a true center is important in my mind.
The two biggest mistakes he made were taking forever to sign a backup PG and center. Our scouts are awful so trusting that an undersized rookie can back Kyrie up was a huge mistake. BUT, I do get it. He's trying to hit a home run each time he does something. Korver for Dunleavy was masterful. The trade that got us Shump and JR, amazing. Getting Mozgov for free when he was a good player. Well done. Hell, if Bogut didn't go down people would be singing a completely different story. You can just magically get guys during the season for nothing while trying to keep this team intact. And the guys that are disposable have too small of a contract to get anyone useful in return. Shump is our only tradable contract and he's been very up and down so the takers were few and far between. He wasn't going to trade JR after the shit he's been through, but next season I'd look into that if we can get someone of value or a mid 1st round draft pick (not likely though). Bring in some youth Griff.