Gender-y Writing Thought

I was reading a lovely piece by swan_tower on gender representation in fantasy, and some of the comments made me realize a thing I'd sort of known but hadn't thought of so clearly before.

Protagonist, narrator, and other author-viewpoint-y characters rarely have a gender in my early drafts, and my choice of whether to label the central protagonist as male or female often feels arbitrary to me in some significant ways.  Arbitrary in terms of the inside-the-story considerations, that is: the character in my head rarely has a fixed gender, and I am giving them one for the purposes of the story.  I often lean towards gendering characters as female just because I'm aware of a desire outside-of-the-story for more representation of female characters in genre, and because I am also aware of a desire outside-of-the-story for more queer representation in stories, and I feel more confident writing a female queer character than a male queer character.
It's not uncommon for me to write the first draft with narrator and/or protagonist genders unmarked.  Swapping the gender of my protagonist from male to female or female to male in a second draft rarely causes me to rethink much about the protagonist's behavior, though it's more likely to influence how secondary characters interact with them.  The only times I can think of when I'm confident that a certain character should be a guy/girl/etc. are when there's an external plot/narrative thing, usually a societal issue or a reaction to a previously existing text, that I want to explore when writing the story.

Which all is... probably not unrelated to my identifying as genderqueer?