I think others have mentioned it, but while Pegg may have not worked that way before, that is typically how studios work, when they are more directly involved. With a franchise such as Star Trek, it is rare for writers to have carte blanche over the story.
Secondly, and for me more important, Lin's input does not equal bad or ignoring characters. Lin might be known for the Fast and Furious series but that doesn't mean he is automatically bringing that game to the Star Trek franchise. F&F is as much an ensemble piece that centers around characters and their relationships as cars and 'plosions.
Secondly, and for me more important, Lin's input does not equal bad or ignoring characters. Lin might be known for the Fast and Furious series but that doesn't mean he is automatically bringing that game to the Star Trek franchise. F&F is as much an ensemble piece that centers around characters and their relationships as cars and 'plosions.