The preview draws me the most on that, and the pic of the human's gotta go, replaced by a pic of a creature of great renown, a vargr of course. To be honest though, I *NEVER* click on those things for fear that I'll get a S***ton of junk mail.
I think you should probably throw in another class or two in the lite version, maybe scouts, cause exploration and trade is what it's all about.
Honestly I'd avoid the cover shot, it just looks too much like some ol' country boy playing with a laser gun. I'd use the 100-Ton Scout image you've got and try to make the ad a bit more subtle, less like three different pieces jammed together. I'd also avoid anything but minimal animation (I always find myself scolling pages to get annoying animations off the screen).
I have to agree with a couple of the posters here: the cover doesn't say much about 'adventure'. I really think you ought to lose the 'old guy' on the cover. (I'm an old guy myself, but that's not the point.)
I agree with the 'slow down the rotation' comments.... also I think that the graphic is a bit _busy_ for the size provided - trying to stick too much into too little space. Perhaps select a smaller area of the cover illo or use something else?
Maybe instead of the cover picture, just a black background with a red horizontal line, and just below the line have in red letters the word "Traveller"...