>> Halfway into it I thought "Hey, wait! Why 'he'?" All I needed to do was change the pronouns, and my hapless Filkmeister became a hapless Filkmeisterin. <<

I think things like this are important. I also know some songs that have no gender markers, but sound very different if sung by male or female performers; and many more where the markers are just in the pronouns or a few pet names that can easily be swapped, again shifting the effect.