• Respect the old fans, but welcome new ones — introduce the characters as if we’ve never met them before. “If you are telling a story as though only the people who’ve spent the last five years watching your other show are tuning in, then you’re doing it wrong. But I will tell you, creatively it is one of the hardest things to execute. The audience could be somebody who’s seen one episode of The Vampire Diaries, zero episodes of The Vampire Diaries, or 89 episodes of The Vampire Diaries but can’t remember anything — how do you introduce these people and this world in a way that is exciting and understandable and palatable to a new audience when, specifically in our case of the fractured Original family, they’re hateful little minxes?” That’s particularly tricky with Klaus, who had two-plus seasons to earn goodwill among TVD fans, but who’ll be presented in the premiere as Elijah’s “potentially psychopathic brother,” Plec says. “You’ve got to find a way to say to the audience, ‘You need to care about Klaus because Elijah cares about Klaus’ — because Klaus is about to do some really nasty stuff, like be told he’s about to have a baby [with Phoebe Tonkin's werewolf, Hayley] and say, ‘Kill it. I don’t care.’ That’s not a hero move in the first episode of a TV show.”
• Honor the history — we’re not erasing the impact of people like Katherine, Caroline, and the legendary Matt Donovan. “It would be unfair to get an audience so invested in couplings and relationships and the histories of these characters that we’re taking to their own world and act as though they never happened,” Plec says. “So the goal is to, without alienating a new audience who has no clue who these people are, still be respectful. If we were just breaking this first episode clean without all the history, there would be romance in it for Klaus. But because there’s still unfinished business with Caroline — even if he doesn’t mention her by name in the first episode or two — he is by no means going to be jumping into any kind of romantic relationship in the very beginning. So we’ve had to find romance and passion and those beautiful moments that I love so much in other ways.” Rebekah and Matt, who’ll have spent a steamy summer abroad, agreed their time together was finite. And Elijah, Plec says, “has a long history of sacrificing his own happiness in pursuit of salvation or redemption for his brother and efforts to bring the family closet together. Katherine was the latest in a long line of those kind of situations.” Translation: They’re single and could be ready to mingle.
• Always be open to crossover potential: “There are sub rules to the crossover,” Plec says, “which is don’t do it to be stunty. Don’t do it for publicity reasons. Don’t do it to be too clever for your own good. Do it because it feels right for story and it feels right for character.” Also, don’t do it too soon: “First, you’ve got to make sure you get all these characters that you’re serving firmly planted.”
Source: Full Interview @ EW