Maybe I'm missing something, but the automagazines that I subscribe to had a lot of positive things to say about the MM starting from its early announcement.
Then, when finally available, every magazine had at least one road test, and the automobile TV shows followed suit; however, not all the reviews were great. Plus, since there's really nothing new in the car for 2004, there was no reason for additional reviews.
Were the magazine reviewers biased against the Marauder? I don't think so. They reported what they felt and observed.
(Besides, positive reviews and "Car of the Year" status certainly didn't help the new TBird.)
Mercury mailed out Marauder DVDs, even going so far as to leave some of the less than glowing remarks (about standing starts) in the DVD.
How much of their advertising budget should Ford have given the car when a first year model run of only 18,000 units was projected? They even discontinued the Marquis LSE model so that, in order to get a full sized Merc with bucket seats, you had to consider the Marauder or a less powerful CV LX Sport.
The economy, some so-so reviews, initial dealer greed, and our love of SUVs all combined to hurt sales. (I wonder how the car would have performed or looked if some of the money spent on the Lincoln "pickup truck" disaster, the Aviator, and/or the new Explorer/Mountaineer platform had been spent on the Marauder?)
But, "it ain't over till the fat lady sings", so maybe there's still hope.