i like this topic for a thread! I just read what you have posted so far (love it!), and its interesting to read it knowing about your ideas for cherry
as for me, there's a few, but the biggest one is the MC's father. i originally planned to include him at some point, she was abandoned to the temple as a child (by doing so, she lost her name and status as citizen in the empire and became a Saintess instead, all at the age of 4. more bad things ensued, etc). I had intended to have her meet him again later and also to focus on her memories of him in a few flashbacks early on. My plan was for her father to have preexisting relationships with the people she meets as an adult in the main story. That was going to be a source of some conflict since these new people in her life were political allies (and personal friends), so she's meeting him after two decades as a political ally but with this terrible history between them.
now though, he's out of all my drafts - he just never fit, somehow, and the rest of the story just moved on without him. in the first volume (not yet uploaded but written) i have him faceless and voiceless in a single line of a dream sequence that moves on immediately lol. if he does get included, it wont be for a veryyyy long time, and my current outline of arcs/volumes 2-3 actually has him dead and gone by the time of the main story with different family members of the MC coming into play instead. All the development i had planned for the mc through her interactions with him is more complexly and meaningfully fulfilled in her relationship with a different parental/caretaker figure she grew up with, so I ended up spending more time on that instead. I wanted to explore how the good intentions and regret of someone who wronged her weren't her responsibility, and go through a whole redemption arc with a character without the obligatory forgiveness on the victim's part, and I found there's more of that to do between her and the person who actually was present throughout her life.
Who knows, maybe I'll end up revising it all again and he'll pop back in, but for now at least its bye to trash dad. narrative development aside, good riddance