Is there a way to customize the "Why do you want to join?" text input question? I doubt there's a way because of all the translation strings it would require, but I would love to turn it into a custom question or add more details to let users know what we're looking for.
@ramsey
On lor.sh we're using patches for tweaks like post length increase, color scheme change or early editing enabled. Because Mastodon isn't about customisation. So most likely it'll be easier to patch language files than waiting for the feature.
P.S. I didn't really check if the option is present because I'm on the phone right now, but I'm not too optimistic about finding it.