I too am very excited about the potential of the BWA.
If I recall correctly, Marcus Smart said that the pending free agency / end of his contract impacted on his mindset, so I am very excited to see him roll out there with no worries about his future.
Terry should have hopefully taken another step, especially in his shot IQ and finishing around the ring. He won't be handed the keys completely, like he was for stretches during the playoffs, but I still have confidence in him cementing himself as one of the best bench guards in the NBA.
Morris is, despite the opinion of some posters, a starter on most of the weaker teams in the NBA, and is yet our 8th man off the bench. With an actual preseason, and the likely chance that he will get to play over 60 games this season, I'm very excited to see what he can bring (assuming he buys in).
Theis and Baynes are both super off the bench too. Theis is rangier, more athletic and more suited to defending the perimeter, whereas Baynes is about as strong as any. Not to mention both were displaying 3 point shots at the ends of their seasons.
Sprinkle in RWill, Ojeleye, Yabusele and Wanamaker and you have, in my mind, the best bench unit in the NBA