Lennier’s affection for Delenn was a recurring subtext of the series, but despite his rash decision to join the Rangers in “The Very Long Night Of Londo Mollari” (season 5, episode 2), there was very little, if any, foreshadowing that he would eventually let his resentment over Sheridan’s marriage to Delenn drive him mad. As Delenn herself said: “I had no idea.”

So Lennier ran away, and as puzzling as his actions were, they also opened the door to interesting new adventures. The last time we saw Lennier, he had stolen a one-man flyer and was fleeing for parts unknown, most probably beyond the Rim. Lennier’s character was interesting: A Minbari of the Religious Cast with extensive combat experience and who also underwent Rangers training. We never found out what happened to him, but we can imagine the life of adventure that awaited him out beyond the frontier of known space, beyond the Rim, as a renegade or mercenary. This would have been an interesting opportunity to explore the darker side of the Babylon 5 universe. Lennier could also pop up in other spin-offs or made-for-TV movies.

3. The Life & Times of Sheridan and Delenn’s Son

The first interesting tidbit about Sheridan’s and Delenn’s son, David, was dropped into the narrative during the season 4 finale, “The Deconstruction Of Fallen Stars.” During a talk show broadcast set in the far future, long after Sheridan’s death, one of the debaters arguing over the merits of the Interstellar Alliance says something regarding “that incident concerning their (Sheridan’s and Delenn’s) son.” Unfortunately, no more is said about that incident during the rest of that episode or in the final season that followed.

In “Objects At Rest,” Londo Mollari, now the Emperor of the Centauri Empire and under the influence of his invisible Drakh “Keeper,” brings a gift to Sheridan: a decorative cup to be given to Delenn’s unborn child at his coming of age. As viewers know, the cup’s sealed base holds another “Keeper.”

Since we know that the Drakh (the vengeance-driven alien race that served the departed Shadows) are using a Keeper to control Mollari, we can assume that the Drakh have similar plans for Sheridan and Delenn’s son. Viewers never found out what happened to David, but this provides an interesting premise for a very interesting story. Whether it’s sufficient to warrant a series of its own is up for debate, but it could be an interesting story arc in a number of B5 spin-offs, including a series on the Rangers.

4. Whatever happened to Citizen G’Kar?