Harmy said:

Well, I for one think this picture looks kind of cool. It's a bow to the real world samurai origin of the Jedi. And as to the robes, the Jedi are basically a religious cult - look at how monks dressed hundreds of years ago and how they dress now, practically no change there.

But this is an illustration of a moment in time where the ancient Jedi didn't have a dress code, and weren't cultic in the practice of their religion. Your reasoning doesn't mesh with the EU's already established portrayal of the pre-PT Jedi Order.