There is a guy who writes over at Jalopnik who is a Lemon Law attorney. Might be worth a quick e-mail.

Tales From The Lemon Law Horror Story Archives

In general I think Nissan makes a solid product but I had a 2012 Altima for 2 years and 30k miles that was on its 3rd transmission. The day after the dealer replaced the CVT for the 2nd time it was traded on my wife's current Honda CR-V so I have no idea if it was finally fixed.