Not these days, I am afraid, I would have to say more is more. Whilst, the black box would intrigue me...I would be happier if covers were more like the Rebellion Sourcebook, First In, T20 Handbook, Rats & Cats, Cogs & Dogs, The Traveller Book, Marc Miller's Traveller rulebook (I know most people don't like Foss, so I will not include other T4 titles), LargeBB, many of the Challenge, JTAS & Traveller Digest covers and perhaps more importantly, I would like interior art to match that sense of wonder.
One of the reasons that I was turned off Fading Suns so long was the weird covers. But, when I got to get a sampling of art inside, I was instantly hooked.
Heck, I would love to gather all the classic AD&D artists and get them to do Traveller. But, I am afraid, it might end up something like Star*Drive, so I would turn to the Internet as well as book publishing to recruit good artists.
I know, all of this costs serious money, but it would cause me to retain and treasure my books and make me more willing to surrender my precious dollars.
As for dialogue and mood, I would have to select the prose of Hard Times or if I am feeling in a more cheerful mood, TNE. Those snapshots really inspire me. The Little Black Book's quote was good but it stopped there. I liked when a story is being told around me, as I read otherwise, dry reading - rules & tables...without going to funny extremes like GT products often do.