I am one who is not a Shatner fan. I am looking forward to a new Kirk, one who is not as egotistical as Shatner so I can start to like the character of Kirk again.
It is well known that Shatner tried to dominate TOS. He took other's lines, changed script to make himself the hero and make every show revolve around himself as much as possible. An excerpt from a book about the episode "City of the Edge of Forever":
"No one else is safe from Ellison's legendary wrath, either. He recounts an incident with William Shatner, who had requested to be the absolute first to read Ellison's completed script for "City". Ellison invited Shatner into his home (after Shatner wipes out his motorcycle showboating in his driveway.) to examine the script. And examine it he does-for several hours. Thus we had the first request for a rewrite, because Shatner had counted the lines he had, and realized that Leonard Nimoy had a handful more. Such were the egos involved here."
Much of the cast hated him. With time I got sick of the domination and constant glorification of Kirk/Shatner. But like all good entertainment it will survive adversity and still would be the powerful series that it was.
Another strike I had against Shatner's egoism was that he tried to one-up Nimoy's excellent ST4 and we got the result of ST5 - a crappy movie. Thank God Nimoy was strongly involved in ST6 or the franchise might have ended there.
I'm looking forward to a likable Kirk/Pine in the upcoming movie. A courageous, impulsive, imperfect captain trying to keep it all working smoothly, an Uhura who does more than just "open hailing frequencies", a brilliant, psychologically flawed Spock who could never lose chess games to Kirk, a witty, energetic Sulu who does more than put Kirks brilliancy into action, a lovable, sarcastic, brutal humored McCoy, and a young, energetic, skirt chasing Checkov who is exceptionally bright for his age and a brilliant Scotty who has ideas, not just mechanics. Shatner's quest for being the constant hero and better, brighter, more courageous than everybody else got old for me.

Now the Shatner lovers will hate me but so what. The character Spock tends to be the draw for Star Trek and has probably done more for the popularity of the show than any other single character so I think the movie will do just fine.
