webSettings are needed for the actual document content, for instance calibre includes it to allow use of PNG files. settings is not needed for content, for example, the OP's request is for a setting to control the behavior of Word, a particular program used to view DOCX files. As a general rule I avoid this kind of thing as that way lies madness.
I could of course allow users to import their own settings.xml during conversion, but that is an extremely niche feature unuseable by most people, just have a look at the kinds of things present in settings.xml, for example:
https://python-docx.readthedocs.io/e.../settings.html