Some of the most amazing books came out of picking up where the writers of the original 1960's show left off. Look at Yesterday's Son written by A.C. Crispin. This is a very well-known and successful Trek novel. It picks up from the TOS episode "All our Yesterdays". That was when the crew of the Enterprise discovered a doomed planet and its population projected through a time portal. Both McCoy and Spock were accidentally sent back into the planet's time and a behaviourally regressive Spock wound up becoming romantically involved with a refugee. Yesterday's Son picks up on that and runs with the idea that Spock had a son 5000 years in the past. I mean, what a concept! Why did it have to take someone twenty five years to come up with that? Not only does it allow for a specific introspective on one the twentieth century's most recognizable pop-culture figures, but it also allows for the further extension of the Vulcan psyche and for the enriched enjoyment of the Star Trek universe.