Chapter titles add a lot of options for meaning and depth!
For my comic I named each chapter after a song by the band that inspired it. Each name is symbolic of the content of the chapter.
Evil And A Heathen is the one that introduces the protagonist as a person who is objectively a terrible person but seems proud of it.
Outsiders is the chapter where each character's arc is introduced, each one exploring a different aspect of isolation.
Come On Home is about people coming together - the protagonist forms a strong bond with one of his friends for the first time in ages and learns how valuable it is. Foreas is reunited with his long lost sister. Each character starts to understand what's most important to them and is sprung into action.
Well That Was Easy is the chapter where the protagonist suffers for a bad thing he did. It's out of his control and extremely painful, with little effort on his opponent's part. The title says it all. It symbolises how quickly the world can turn on you.
I'm not going to spoil chapter 5 though!!!! That's a secret.
Anyways, without the titles it might be harder for a reader to pick up on those implicit meanings. The names of the songs and the actual vibes the songs give off, both help the reader to get something extra out of the chapter.
Plus, it gives me a chance to push british punk/indie bands onto more listeners!! If someone reads Flirting With Death and starts listening to Franz Ferdinand as a result, I'll cry with joy.
I don't name each update, just the individual story beats. I can see how this would also be usable for naming updates, though!