This.

Try for something that looks good on it's own merits, while maintaining a subtle connection to mathematics. Perhaps a design based on the Golden Rectangle? I would suggest an image of the Mandlebrot Set, but I understand that they take just forever to apply.

This is just common sense. Nice to see it validated though.

That's a bold statement! It might sound a bit more believable if your global economic system was not in the process of crashing about your ears. Pretty soon we may all be penniless hippies.