It is no secret that the world of Star Wars was a huge reason I am a fan of the science fiction genre. From the special effects to simple plots with intricate characters, history, politics, religion etc.
What continues to keep me drawn into Star Wars is the fact that it all started in the 70's, and evolves effortlessly from generation to generation. Very few shows can claim such a feat. As this universe expansion heads once more to make the jump to light speed; it seems we leaving what is familiar. Personally I love it when actors return to a series. In Star Wars' case it gives the audience a sense of familiarity to something that may not be as we once knew and this is why I think it is important for cast to return. Add to this, I believe it builds upon what is already there.