Yeah I don't see your argument. Just because you're used to European or (coughs --> barfs) American design, does not mean there are other ways of designing a car. In fact, this is what suits us. Organic, Japanese, and pulls a lot of natural design elements.
That design you're also referring to? People would have called the spindle grafted on, and hell, that one does not look nearly as good as the 5LS. That rear end, then people would have whined that it looks like the S-Class and they have no ingenuity. Don't blame the Japanese if your boring American car design still has the ancient, boxy layout. Japanese design is always more flowy, more...... natural and sexy. If it wasn't for Japan, American automobiles would still look like they're from the 80's. Nuh uh honey, this is what we appreciate. We don't like to copy, we like difference and uniqueness. If that's a problem for you, then it ain't their problem. We like it, dealers like it, and most of all, CONSUMERS love it too. Just take a glance over at the sales reports.
EDIT: P.S Don't just decree that someone should be sent to an American or European studio. That's flat out assimilation. Shame on you. That's someone's hard-work, love and passion that went to designing that car. Hundreds, or maybe thousands of man and woman hours that went in. These cars represent of what Japan is all about. If one day you want something truly Japanese and no, it isn't the sushi that you get at your convenience store (still damn good though and may very well be Japanese), but you either go somewhere or someplace where they give you legit sushi, or you buy a Lexus. True, down to Earth, Japanese craftsmanship.