Steph and Klay are great scorers who do very little else. Klay has improved pretty much not at all. Look at his production rates and he's a clone of last year. In fact on a per minute basis he's producing significantly LESS. Klay is a refined player who is what he is. He's a lights out shooter who does little else. Steph has improved some but he's not a superstar type that's going to lead GS anywhere significant.
Steph's arguably the best shooter the league has ever seen (only minor exaggeration) and he's a great playmaker. He's also played surprisingly solid D this year. I don't know, I'm not going to ask for much else out of my point. Klay's the ideal SG for him. Terrific off the ball scorer who has length+athleticism that combined with his work ethic should mold him into a defensive stopper in the coming seasons. I'm a big fan of him. Huge upgrade over Monta.