I still think the best thing that can happen to this team is to acquire a stud defender SF, with a bit of size (who can also shoot and pass decently).
That allows us to move Tyreke back to a guard position, move IT to spark plug off the bench.
It shores up our perimeter defense hugely. Tyreke is a good defender, but only a slightly above average defender at SF position. You get a stud defender there and you boost up that positions D, and then you let Tyreke guard the most appropriate of the guards, where he is an upper echelon defender. Two defensive birds with one stone.
And of course we still need that be shot blocker/interior defender. But the first move would go a long way.
p.s. Batum would be ideal.