The recent Dancey and Tweet on growing the hobby thread cited Tweet's (old) plan "to potentially increase core book sales without a huge design overhead":
(For the sake of argument, let's assume the product is a boxed Basic Set.)
Ignoring the debate about whether this is a good idea or not, what theme would you like to see, and what would the product do to convey that theme? What kind of art would be on the cover? Who would the sample characters be? How would the sample gameplay section read?His idea was to make an annual "theme" for D&D. The obvious example is "anime". The "Anime D&D" books would use all new Anime art, Anime iconic characters, etc. but would use the 3.5 game rules virtually unchanged. Similar "themes" could include "Gothic Punk", "Arthurian Fantasy", "Cosmic Horror", etc. Such products could induce "fence sitters" who would like to play D&D but don't like the baseline fantasy imagery to buy and play the game.
(For the sake of argument, let's assume the product is a boxed Basic Set.)