I understand how people can want everything all at once, but there's usually a progression. I want my bigs to play big first and bring the other stuff later. But also consider that Koufos was billed as the next Memo from a young age and was never given the green light Kanter has been given on jumpers.
I suspect his jumper is going to be a big part of the game that he builds. And I can see a really high ceiling for him if he takes developing his left hand seriously and putting a greater emphasis on hook shots (if he went to his left more to finish on his up-and-under, and if he went to a reliable right hook more often, he could conceivably be just about unstoppable on the left block. I've noticed that sometimes when he tries to sell the up-and-under, the defender won't bite on a shot-block and he then goes to his awkward shuffle-and-bump where he's in danger of getting called for a travel or offensive foul and part of that is because when he makes the spin to face the basket he's suddenly exposed the right side of his body to defense and won't counter with a shift of hands. Changing that move to a progression of what the defense gives you where he looks for the hook first but ready to kill the move and go up-and-under to his left hand [to protect the ball] could be devastating).
It safe to say out of the core four (Favors, Hayward, Burks, Kanter), we still don't have even a slight clue who will end up the best.
He still has some flaws, but I like how he's playing for the most part. Given 25 minutes a game, I think we could see some real development. Gotta hope for something at the deadline.
I'm going to use this opportunity to reiterate that I don't give a **** about Jeremy Evans, and neither should any fan of real basketball.