Chuck Klosterman thinks the producers of Lost have written themselves into a corner:
For three seasons, the ABC series Lost used flashbacks to illustrate elements of the narrative the audience never saw. Now they've gone the other way; now they're consistently using flash-forwards to show parts of the story we haven't yet experienced. It's made the series even more interesting than it already was. But something keeps occurring to me: Isn't this a dangerous move on behalf of the producers? They seem to be giving its central cast members the strongest negotiating leverage in TV history.
Stronger than, say, the position Jerry Seinfeld was in when he put his name in the title of his series? Stronger than the position the six Friends were in when they realised that by sticking together they could put enormous pressure on the network when contract renewals were due? I'm not convinced.
Lost has a core cast of around a dozen actors and a setting where a character can very easily be made to disappear in mysterious circumstances. The leverage any one actor has – even the ones playing Jack, Kate and Locke – is relatively small.
Let's say the actor who plays Sayid (Naveen Andrews) suddenly decides to ignore his current contract. Let's say he demands twice as much money as he's scheduled to receive and won't show up for work without it. What could ABC possibly do?
Make sure he never works for an American television or film company again, since a) he could easily spend the next three years fighting a breach of contract lawsuit, and b) other TV producers may be disinclined to hand recurring roles in their new projects to actors who are disinclined to stick around.
Naveen Andrews is a fine actor, but by no stretch of the imagination does he possess the sort of star power to pull a stunt like that.
They can't just feed him to the smoke monster and write him off the show; we already know he definitely exists in an abstract tomorrow. By actively showing the future, the screenwriters have relinquished their ability to control the present.
Hardly. It just means that they can't easily show Sayid on-screen doing things he hasn't already been filmed doing. You can still have a scene where Jack and Kate talk about how Sayid ended up hunting down and torturing the head of the Hanso Foundation, you just can't show Sayid doing it without recasting the part or shooting it so that the audience never gets a good look at Sayid. Not ideal, but not an insurmountable problem.
An even greater (and admittedly morbid) problem would be accidental death: What if Michael Emerson (the actor who portrays Ben) died in a car accident? Would the show simply have to end? How could his absence be reconciled?
Again, they either recast the part or write around the actor's absence. Granted, by letting the audience in on what is to come the writers have narrowed their options somewhat, but they can work round these problems if they have to.