My advice, for whatever it's worth: To begin with, the image is just too dark. Also the wireframe isn't wireframey enough...is there a way to generate a version with fewer polygons? It's more or less noticeable that it's a wireframe at the bottom of the image, but then suddenly it gets mooshed into a blob of green and totally loses the effect. More contrast would also help. Also a less uggy green? As for the font, it's ever so slightly difficult to read, at least the "network" part. I'd use a thicker font, and make the drop shadow much less prominent. In fact, I'd try ditching it altogether (even though I do like my drop shadows!) and try white text with a black outline. I think the second version is closest to what you're trying to achieve, though my advice also applies to that one, plus I'd make the fade-over between wireframe and non-wireframe more gradual.
Now it might sound like I've totally trashed it, but I do like the idea...I suppose it's not the most original in the world, but nine years of print design I wanted to do something like that, and never quite got the opportunity where it would have been appropriate.
Edit: Oh, I forgot: since the name is "Natural Networks," maybe the image should follow the name, and go from natural on the left to networky on the right?
--Eric
