dont think so
i really want to know how much the writers knew about the story and the plot when they were writing season 1
That's a good question. From what I understand, the story has evolved a lot. Ben, for example, was supposed to be around for only a few episodes. And the numbers became more prominent only when fan reaction to them proved so intense. I've also heard comments related to Jack originally not surviving past the first season.
At the same time, I've heard the two senior producers talk about how there are clues in the pilot that, looking back, will indicate they've known how the show would play out. Part of the problem, they say, is they didn't know over what timeframe -- hence some of the more annoying gaffes and distractions and episodes that were more than a bit pointless. Supposedly, the agreement to wrap the show up at 100 episodes helps them frame the story.
Understandable, but why are they doing three seasons of 16 episodes, give or take, instead of two really cool seasons of 24 episodes? I believe a regular season is 23 episodes, so it would have been more of the norm.
My guess? The obvious: cash in on another season of ad revenue and dvd sales. Who can blame them entirely, right? Also, time to figure out what is going on. They definitely have a longer writing cycle this way, so I think, to some extent, they're still walking blind, despite claims to the contrary.