I don't think that just because he is a kid it won't take away the mystery about him. He was mysterious because he seemed very roguish, like someone who has no friends and goes through life how they choose. He seems like someone who lives alone, making a living out of Bounty Hunting and has no family and no counter-operatives or friends.
But according to theForce.net Temuera Morrison has confirmed his part as the father of Boba Fett and there also rumours about his mother being involved and a clone captain related to him. With his family involved I think it removes his rogue appearence and darkness.