>>108853463It depends. if the authors know what this train is for, who is driving it and why, then it has change to be good. If he goes "I'll find out while writing it", then we'll get a shit-fest like Lost.
Might you, if he find a better reason along the way, he should do it, a writer doesn't have to stick to his gun no matter what, even if it require a bit of retcon and twisting continuity. Continuity shouldn't get into the way of a good story.
But a known destination, at least for the story-teller make the journey better when it comes stories build around mysteries. Even if the destination change along the way.
I'd say tulip should get most of her answers by the end of season 2 or 3. After that the story can go on with other motivation on why staying on the Train or take a new turn by having the real world impacted by the universe of the train, playing on the "you can never come back home" concept and now having to deal with a changed home and being the one with the keys to help it get better. But I am getting ahead of myself, there.
I just hope he doesn't go the "failure is the only option" way.