well you need to keep the same basic outline but I really don't know what he means by shallow. Aside from the fact that there are more than likely more facts or details that you're missing out on. He wants you to take what you have and make it better. Take the idea and build on it develop it and think outside of the box. You got it in you to do this paper and do it well you have nothing to lose after all. You have stated that if you fail then you can find a replacement so go in with that idea and give it a go... .just for the hell of it you know.