Can't let this thread die ever!
Ah man, I binged all the videos on this channel recently analysing the writing in Arcane, and these are my favourites. I was like "damn, I should be taking notes..." Some of the analysis here is just...wow. Also it translates into fantastic writing advice.
How Arcane writes compelling morally grey characters the audience can still feel invested in despite them not being perfectly "good people":
How Arcane writes female characters (this one is so good):
And then a follow-up on how it writes male characters, discussing more related themes:
Speaking of Arcane, Arcane writer Local has added new vids to his channel. This one on pacing, and how to fix "bad pacing" is great. I love how concrete and actionable all his advice is.