It's not a question of looking for old famiiliar faces, or even expecting them to be present, but appreciate the warmth these characters have brought us for the last 40-odd years, re-captured again, for the generation that to follow. Case in point, the pre-quels to Star Wars. Ewan McGreggor's interpretation of the character Alec Guiness made famous was probably McGreggor's best acting. The idea that Spock gets pissed off with Kirk (unless I misinterpreted the trailers [pon-far anyone?]), Kirk driving a car (in the episode "A Piece of the Action" he comments that he had never driven a car before, and here he is driving a car in the film as a kid) - need I mention "SIBERIUS?" WTF!?!?!?
Recycled, reinterpreted, re-imaged, whatever you wish to call it... Hollywood should leave well alone and not tamper with characters to be 're-vamped.' I can appreciate the idea of bringing them back for some more sci-fi, but honestly, don't change that which is already perfect. I can only hope that I mis-read the trailers, and they appreciate what the likes of McGreggor did for Obiwan... respect and homage to what is already established!