A common theme is often the continuation of the fight in the face of loss. Even though Ezra is gone, the rebels keep going. In some fanfictions, his death is a catalyst for change. The rebels might change their tactics or their leadership structure. And of course, there's the theme of grief. Each character will grieve in their own way, and that can be explored in detail in these fanfictions.
One common theme is sacrifice. Ezra might die to save the rebellion or his friends. Another theme could be the impact of his death on the other characters. For instance, how does Sabine deal with the loss of her close friend? Also, there could be themes related to the Force. Maybe his death causes some sort of disturbance in the Force that has unforeseen consequences.
Frequently, there's the theme of legacy. What does Ezra leave behind? His teachings, his relationships, and his impact on the rebellion all become part of his legacy. Some fanfictions might focus on how the other characters strive to uphold that legacy. Additionally, the theme of mortality is present. Ezra's death makes the other characters more aware of their own mortality and the risks they take in the fight against the Empire.
If you want the clearest chapter reference, go to Chapter 58. Early on, Facing Jiang Yan's triple barrage of questions, Jiang Li's only response...; later, the chapter leans on After a long while, she yawned indifferently and said, "I didn't pick up....
A practical answer is Chapter 47, because it turns the idea into a concrete scene. The chapter opens with Qi is actually second???] [Did the production team make a mistake?, adds pressure through The internet is so chaotic, all that previous slander might as well have..., and ends on Qi is so.
Chapter 47 is the strongest chapter-level answer because it starts from Qi is actually second???] [Did the production team make a mistake? and follows through on Qi is so excellent and only got 17, yet Jiang Li comes in with 22?.
Chapter 26 is the strongest chapter-level answer because it starts from Shen Lan was bent over processing a large stack of press briefs on her... and follows through on If you think you can use our family connection to have me handle this....
A practical answer is Chapter 34, because it turns the idea into a concrete scene. The chapter opens with Seeing that the public sentiment wasn't quite right, Su Yinwan felt..., adds pressure through Hurry up and start the live show, I can't wait to watch the universe's..., and ends on Now that.
A practical answer is Chapter 50, because it turns the idea into a concrete scene. The chapter opens with [666, if good scores determine rankings, is Flash Change's production team..., adds pressure through I wouldn't wear such ugly shoes!, and ends on What kind of heavenly being had such a sour.
Look to Chapter 25 for the clearest answer. It begins with Therefore, from his childhood, Jiang Shixu had felt an extreme aversion to..., keeps building through Over time, he naturally developed a gap of estrangement between himself..., and lands on Having worked beside Shen Lan for over a decade.
Chapter 48 is the strongest chapter-level answer because it starts from He Yun felt guilty for initially ignoring Jiang Li on purpose, and with... and follows through on Besides, everyone's phones will be replaced with special smartphones....
A practical answer is Chapter 43, because it turns the idea into a concrete scene. The chapter opens with The moment He Yun willingly sat next to Jiang Li and even took off his..., adds pressure through VIP lounges and business class still count as transformation?, and ends on Just as she turned.
A practical answer is Chapter 13, because it turns the idea into a concrete scene. The chapter opens with Sensing that something was off with Jiang Yan, Jiang Yan dismissed the..., adds pressure through He probably had a good guess who it was., and ends on How could this happen..." Lin Manru.