The defense is the main thing.
He already makes his teammates better. When hayward was out with injury burks averaged about 5 assists per game in less minutes that hayward, and hayward only averaged around 5 assists on his 36+ minutes.
So just going off assists, burks is about equal to hayward when taking haywards place in the lineup.
(Watch kanter and goberts highlight videos and you will see many nice passes from alec to them)
As for learn how to use a pick. The great thing about burks is that he doesnt need a pick to score, beat his man, get open, or get to the basket and kick to teammates. In an offense based on spacing, this would be a great attribute because you would not need to bring a man to set a pick for him. (bringing two players, and thier defenders, close to each other which could destroy spacing)
His defense does need alot of improvement though
I would have to see some on/off FG% for his teammates on Alec Burks.
Like Hayward's are all significantly higher when he plays. Not sure the same is for Burks. He is going to get assist numbers when he plays and Hayward doesn't because someone has to get the assist, not always the best tool for seeing if he makes his teammates better.