My thinking is that there's no question that Vince Young has a lot of talent, and is a physical specimen with protypical size, cannon arm, and able to scramble.
The knocks against him are his decision-making, mental makeup, and football IQ.
As long as we offer him a deal that is incentive-laden and protects our organization financially, I say why not? Our organization has shown that we've been able to stabilize the careers and promote success from players of troubled backgrounds/reputations. Pete Carroll has a way of connecting with, and encouraging, players that most traditional coaches deem "unworkable." From Mike Williams, to LenDale White, to Marshawn Lynch and Percy Harvin, I think if anyone can get the most out of Vince Young, it would be Pete Carroll.
His football IQ, reading defenses, going through progressions, can all be improved with good coaching, and Vince Young would have time behind Russell Wilson to be coached by the Seahawks staff, influenced by Russell Wilson, and learn our schemes.
I know Vince Young has "dropped the ball" and made mistakes in the past that really messed with his NFL career, but the Seattle Seahawks have been well-rewarded for giving players a second chance. There's no question adding Vince Young adds dynamic talent to our team. The real question is whether we'll be able to work with him and make him work for our team.