Sadly George is getting pretty old, but I'd still like to see him in action. I would have loved to see Captain Sulu and the Excelsior rather than most of the Trek series we've been given (heck, I'd rather watch that than TNG, DS9, or Voyager). It's obvious B&B do what they want, as it's always about some temporal/time something or other. They need to go, and if I were the guys in charge I would have been pretty angry when they went and did the prequel as their time traveller story instead of doing it properly.
Heck, I think some of the stuff between the Andorians and the Vulcans could make for some really good T.V., but they never really go where they need to, they just use it as window dressing for filler episodes. Sad, really.