Jossed: Theories about the comic that have been Jossed by the creator and Lucasfilm include: Lucien Draay is Darth Sion and/or Darth Nihilus, Zayne Carrick is the Jedi Exile, and Krynda Draay is Kreia. Lucien Draay rejecting becoming Darth Sion is actually a plot point.
What Could Have Been: They recorded the "tell me about this planet" conversations for Juhani, the same kind that you get for other party members, but they were cut from the final game. You can restore them with GameMods.
Word of God: John Jackson Miller's blog contains a lot of explanations that confirm or have Jossed fan speculation.