Is Jacob developmentally challenged or arrested, or perhaps autistic?
It's almost a STAR TREK original series concept. A child's mentality with the powers of Protector, plucking people out of the outside world for use almost literally as game pieces, a game governed by rules that he creates, to carry out his mother's last wishes and also to prove a philosophical point about humanity.
Listen to some of his dialogue carefully. I seem to recall some striking mid-convo-stream almost-non-sequiturs. Like a kid rambling off some related topics in that very kid-like way. One conversational track jump that's always stuck out...
JACOB: That man who sent you to kill me believes that everyone is corruptable because it's in their very nature to sin. I bring people here to prove him wrong. And when they get here, their past doesn't matter.I've written it off as a sign of the creators' need for crowbarring in certain exposition into season 6 episodes, but it could be a sign of his not-typically-mature-adult thought process as well.
And if he is something like autistic, maybe he sees a big plan, but doesn't KNOW it.
Esau would then be a once-loving but now incredibly resentful brother's keeper, drawn into this game as Jacob's opponent.
Or, it could just be nerdy social skills due to being raised to be a Mama's Boy and not hanging out with any other people. Esau, of course, grows to be quite the charmer, eh?
This scenario could be the twist to a single episode of something, or maybe part of an ending to a 1-season arc or a feature film, but no way it could be for the epic that is LOST, right?
Keep on keepin on~