I want to make sure I'm interpreting the rules right, Lensman
. I gather that you're saying:
1. The book cover or poster must reflect a Trek TV series episode (not "The Wrath of Khan" with the TNG crew);
2. The crew used in the artwork must reflect a different Trek TV series (as opposed to a certain 2009 movie, and as opposed to the "New Frontier" crew from the book series);
3. The supporting cast used in the artwork must be the original supporting cast from the episode in question (so "Balance of Terror" may feature, say, Avery Brooks but also Mark Lenard).