This is really nice. I'm working on a similar project right now, trying to hook together a few console UI pieces like this into a coherent annotation tool:
Thanks for the feedback! Will definitely add more features to this package. Wrapping up several prompts together is a great idea too, thanks for the insight.
https://github.com/larsyencken/questioner/
It's not as pretty as bullet, but it's trying to fit in an annotation loop. It would be super cool to extend bullet to choose-many questions too.