Every science fiction element has to leverage or make a difference. Each element has to equalize the rest, as everything contributes to the structure of the story.
When science fiction comes into your mind, what normally calls into our mind is anything eccentric with the involvement of extra-terrestrial entities.
Your plot may surpass the rest of the fiction works or it must have been something that any writer has not thought about. Yet these brilliant fiction ideas can easily be thrown overboard if not delivered properly to the audience.