the list on PyPI is far from complete

Ah, the word processor delusion. You know how that goes: sure, no one uses more than 10% of the features that MS Word provides; but someone uses each of them (or darned near), so a replacement that only covers the most-used 10% will not appeal to a majority of users.

All statistics in this post were made up or borrowed from half-remembered sources who almost certainly made them up. Nevertheless, MS Word is still the 800 pound gorilla...