One of the memos that is dated 7/31/94 spells out a/b plots for some second season episodes that got moved around into other episodes, as well as some that were dropped and a focus on Keffer plots that were actually never going to be used (Joe put them there in the memo to satisfy the network). There are six episodes mentioned in this memo:
1. "Unnatural Selection"
A-plot about a new Down-Below leader
B-plot was about Keffer taking a Starfury out on personal leave for his friend's memorial
2. "The Customer Is Always Right"
A-plot was a plot about a holo-brothel ("River of Souls")
B-plot was Delenn's fate in the Grey Council ("All Alone in the Night")
3. "Rites of Passage"
A-plot was a Keffer plot about him being caught in a war between two alien governments and sentenced to death for being a spy.
B-plot was about the Centauri Emperor dying ("The Coming of Shadows")
C-plot was about Talia being paired with a mate by the Psi Corps to breed a better Telepath (sort of changed around in "Soul Mates" where she's already paired off)
4. "A Race Through Dark Places"
A-plot same as episode
B-plot Delenn wants Sheridan to teach her how to be human and Sheridan wants to learn about being Minbari (around here and there; Delenn asks Ivanova about being human in "Soul Mates" and Sheridan gets involved in Minbari ceremonies in the third season)
C-plot Garibaldi is introduced to the Rangers ("The Coming of Shadows")
5. "The Very Long Night of Susan Ivanova"
A-plot The Centauri finally attack the Narn with the Shadows help; war is declared ("The Coming of Shadows")
B-plot The founder of B-5 comes to visit - moved to the first version of "Matters of Honor" but ultimately dropped
C-plot Ivanova is ordered to take time off
6. "Dream Within a Dream"
G'Kar is in a "healding coma, the Narn way of dealing with the disease." Everyone in real life is in the dream but in different roles. Quoting from the memo -
jms said:
He is Captain Jack Carr of the Earth Alliance; his female Russian second in command is Commander Dylan (a human version of Delenn, played by Mira without makeup), and his security chief is Len (the human version of Londo, played by Peter without makeup). They don't believe his story that this is a dream...neither do the various ambassadors, Minbari ambassador Sherdinn, Narn ambassador S'san, or Centauri ambassador Garabaldo.
...
The only constant in the real world and the dream world is Kosh, who may hold the secret G'Kar needs to heal himself and break out of his dream existence.
The network apparently thought the last one would be too confusing for viewers.