I think all these discussions about the possibilities and impossibilities are summed up in a question asked of Roddenberry and his answer to it.
FAN: Mr. Roddenberry, how does warp drive work?
GENE: It works very well, thank you.
As for going into the depth of things, I'd have to say that Lord of the rings goes into more depth. JRR Tolkien wrote two separate, and complete, languages (Quenya and Sindarin, respectively based upon Finnish and Welsh). He then decided that, as they were similar but different languages, he'd write a history explaining their differences. Into this history, which wasn't completed at the end of his life some 50 years later, he gave:
- Near-complete histories of his languages, explaining etymology, morphology and syntax;
- Completely original alphabets which follow a completely different system from both Arabic and Cyrillic;
- Partially written languages for Ents, Dwarves, the Rohirrim, Orcs, and Hobbits;
- Complete family trees of the 'royal' families of Gondor, Rohan, Hobbits and the Dwarves, often including details about how, why, where and when they were born, lived and died;
- A history spanning some 6'000 years or so, from birth of the world to into the Fourth Age (after the One Ring is destroyed)
- Creation stories for all the main races of his world
- Vast amounts of poetry and folklore of these races
- Detailed maps
- Some of the best-loved and most-read books of all time, having sold around 150million copies since its publication in 1954. The only fiction book to have sold more copies is Charles Dickens' A Tale of Two Cities with 200million copies since its publication in 1859. And, as that means A.T.O.T.C. has sold around 1.2million copies a year compared with L.O.T.R. selling around 2.7million, you could argue it's the best-selling fiction book of all time. PLUS if you include The Hobbit as well, that's another 100million copies. So that puts the L.O.T.R. books selling more than 250million copies, at about joint sixth on most-sold books of all time.
etc.