How would the plot and outcome change if the novel were told from a different person’s point of view?

Fahrenheit 451 is written in the third-person "limited" point of view. This means that the protagonist's, Guy Montag's, thoughts and feelings are closely followed by the narrator; however, the audience is unaware of other characters' thoughts and feelings. By writing in this point of view, Ray Bradbury gives the readers a personal inside look into Montag's life. The following quote from the novel demonstrates how Bradbury allows the reader access to Montag's private emotions:

He could feel the poison working up his wrists and into his elbows and his shoulders, and then the jump-over from shoulder-blade to shoulder-blade like a spark leaping a gap. His hands were ravenous. And his eyes were beginning to feel hunger, as if they must look at something, anything, everything.

In this excerpt, the narrator describes Montag's uncontrollable urges, giving the reader an inside look.
Had Bradbury decided to write the novel from a different point of view, many aspects of the plot would be different. Each major character plays an important role in developing the plot, but if the story was told from a specific character's point of view (first-person point of view), the reader would gain a tremendous amount of insight into their true thoughts and feelings, rather than a narrator's limited perspective. Take, for example, Captain Beatty. His character battles with knowing the truth about society while also doing his job as fire chief. He has read books and has first-hand experience with the negative emotions that knowledge can bring to one's life. If the novel was written from Captain Beatty's viewpoint, the reader would have a better understanding of the reasons for his torment, his antagonism towards Montag, and the reasons why he chose to conform and enforce conformity. Clarisse also plays an important part in the plot, since her curiosity and wonder are what spark Montag's attention and make him rethink his whole life. If the story was told from her point of view, the reader would then know things that were not described in great detail in the plot, such as Clarisse getting hit by a car or her seeing a psychiatrist.
Ray Bradbury could have written the novel from a third-person omniscient point of view, in which the reader would have had access to all of the characters' thoughts and feelings; however, the plot's focus would have shifted from Montag's personal life to concentrating on the society as a whole. Therefore, by writing the novel in the third person limited point of view, Bradbury allowed the reader to follow one major character through his journey to finding his true self and the conflicts and struggles he faces along the way.