PICK AND ROLL.
The proper setting of a screen and the dribbler actually USING it with the other players doing something that might remotely benefit from it.
The perimeter players not leaving their man to help the big men. Stay at home, on your man - they are who's been killing the Kings this year (outside shooting and.....)
.... perimeter players HAVE to learn how to stay in front of their men and stop more penetration. It's a sieve out there and the big men rotate to stop it, leaving opposing bigs layups or great offensive RBD opportunities.
Learn how not to get stuck on screens. It's like the Kings perimeter players' bodies are made of glue.
How to send an interior pass to Cousins establishing presence so that he doesn;t catch it 18 ft from the hoop and it doesn;t get stolen.
Stop the weak handoff passes that continue to get picked off.
Work on spacing and positioning on the break so you know where trailers will be.
Crap, I'm running out of patience to list everything they should be practicing.