All of these characters have changed since their inception. Many didn't exist til recently.
So it's a bit of an exercise to de-age Katrina Stone from 40ish to 17, for example, and look at how her relationship with Steven works.
Seeing Annie & Jessa's lifelong friendship. And they both drag the men they meet at the Sanctuary back to Shayara...
Young Jeramie, as he first takes control of his House. Power-tripping.
Thomas Halloran as the acting Kithrayn of House Bartomn, since the true Kithrayn is his five-year-old son Michael.
Donna as a sidekick to Jessa & Annie.
How the Council ran Shayara before their little breeding program started, before Alanna. When it was just a group holding the city in trust, so to speak, for its missing Lishaya.
Stuff like that.