It could be argued that the Thrawn Trilogy was a seminal event in Expanded Universe history. While the EU existed prior to Heir to the Empire, it precipitated an onslaught of non-movie media. We have compiled an admittedly abridged list of unproduced Thrawn Trilogy characters. Some characters were omitted due to a lack of visual reference (Chin). Others were omitted because of canonical conflicts (Judder Page). What we do have is a list of the highest priority figures from the three novels (and a mandate for the return of Comic Packs!).
We could not have completed this without the assistance of Jedi Temple Archives and their engaged and enthusiastic members. In fact, a special credit goes to JTA member Arnold Corso for being a veritable wealth of EU knowledge.