Other
I'm not sure what it would take to free a person from re-inventing the wheel when it comes to the book that accompanies a deck, but whatever it is, that's what
I'd love to see. However, I'll admit almost any solution along those lines makes things difficult for newbies.
I've often wondered: could a bibliography or something like that could be supplied instead of a thumbnail tarot history or the usual LWB descriptions? Maybe mention a few free websites? A key-word list in an appendix?
What I'd want to see is information specific to the deck, information supplied by the artist (or the author and the artist if that's the way the deck came about). I'd like to know something about the deck's theme, why the artist chose to express the theme in the way that s/he did, what mood s/he was aiming for and how she produced it, that sort of thing. Something about the deck's symbolism is important if the general tarot enthusiast is unlikely to be familiar with it. Or if the theme involves any kind of odd symbology. (For example, most people know the usual Halloween symbols, but if you've come up with some unique ones . . . .)
Whether or not I'd want a card-by-card description would depend upon how far the deck moves away from one or more of the standard models. In any case, I'd like the descriptions to apply to
your Four of Wands, not to just any Four of Wands.