I really like the intro, but the vocals are a little harsh. They're a little... piratey.
I would soften up the tone, rather than like a ballad type song, turn it into a quieter, chiller song, similar to the style around 3:15. I think it would work very well with the music, which I love.
Not even taking any of that into consideration, the production quality is very good. I would say with some work this could be an awesome tune!