Since they are going with a storyline that includes Vulcan 'fanatics' I think Sybok would be an interesting character to portray.
One way to go might be to have him start off as a 'Logic Fundamentalist' against his father (possibly a reaction to Sarek having replaced his mother with a human and sired a half human sibling) and then eventually do a 180 into a complete embracing of emotion. It would be a potentially fruitful way to explore different aspects of those who are prone to fanaticism in general.
One way to go might be to have him start off as a 'Logic Fundamentalist' against his father (possibly a reaction to Sarek having replaced his mother with a human and sired a half human sibling) and then eventually do a 180 into a complete embracing of emotion. It would be a potentially fruitful way to explore different aspects of those who are prone to fanaticism in general.