Is it normal that when you're revising a 1st draft of a novel, you tear out/replace chunks of a plot or main character?
For instances, in one of my rough drafts, my main character's a crossdresser. However, I'm thinking that for various reasons, I may not want him to be a crossdress anymore.
Is the revision completely left to taste or what?
Yes. I've had stories that I've revised so much, that you can't tell the original and the edited verson were ever the same thing. Stories change over time, and editing is just part of the writing process.
Thank you! It was something that came to mind when I was writing. First drafts are meant to be changed. They wouldn't be called 1st drafts if they weren't.