ain't going to lie. As a fan of KH this is pretty slick work.
You'll have a select group be interested in this.
I would use as a sticker not sure about me wearing it as a shirt or even how you would tie it in with your brand.
You had the sketch of the bomber too right?
Once again though I see you are saving money by usint auto trace but if you want this to come out clean send the vector file off to a graphic designer so he can clean up the lines and make them smoother. On the keyblade it's really noticable. I'm new with Illustrator myself so it's a common problem I have as well.