IMO, after they discontinued the Continental, I knew that was the beginning of the end for the LS. Lincoln needed a platform to bridge the gap pricewise for the older demo that couldn't afford a TC, so they started to add elements that were anti-sport around that time, like the rim options, the interior logos/presentation, etc. The 2nd gen. LS just seemed so old-folkish compared to the 00-02 to me. When I saw the keypad on the LS door, I knew its days were numbered. Instead of stepping their game up to try to snipe BMW (like the McLaren LS may have made a strong effort towards) it seems they regressed.
I thought the LS was originally intended to appeal to the younger market, the 35-49 crowd, but after the redesign, appearance-wise it just seemed to grow older each year to me. I still enjoy my LS, and I may go back and get an '02 LSE probably, but I think Ford really dropped the ball. Nobody respects Lincoln anymore to me, especially after the redesign of the Nav. Of all the "upgrade" brands like Infiniti, Lexus, Acura, etc., Lincoln is last in my book.