I think it is a bit too dark. That is why there is no real depth. I like the effects, the flow, but the signature could need a bit more of colors. Well lets see. Basically add colors, add lighting, add a light resource, set a (at best) small focal point where all goes together.
actually the lighting is good, the focal is decent, and its not really dark at all. only thing i really suggest is to not rely on c4ds for almost all of your effects