Given the relative sparsity of appropriate screen info. in LW, an unusual approach might be called for. One thing I often do is type up rules summaries for whatever rpg I'm usually running, and simply print them off on thick stock, so they're ready at hand (more akin to "cheat sheets" I suppose). A ready-to-print .pdf of such summaries might be a cool thing, although such would be more likely to be a freebie, although it could certainly be published (and would be much cheaper to publish than a comparative GM's screen, which given it's unusual size, format, card stock, and full-colour printing, is a fairly expensive proposition).
Package such rules summaries with other cool bits-n-bobs, such as lots of character sheets, (because not all fans have access to the internet and Acrobat downloads), a few A4 or A3 colour maps or location plans (such as the Kai Monastery, for example), a small booklet of Adventure Seeds for the harried GM, and maybe a few short vignettes (or even a decent short adventure), and you might be hitting more bases. Alternatively, a nice "pocket-sized" screen might be an option, one much smaller than the usual, just large enough to display the summaries and a decent image, rather than some great monstrosity.
Just some thoughts.