You know what feature I want? The ability to "upgrade" any text that matches some specific set of properties (eg. "Font size > 12, bold") and apply a particular

You know what feature I want? The ability to "upgrade" any text that matches some specific set of properties (eg. "Font size > 12, bold") and apply a particular style to it. People create all kinds of horrifying fucked up Word documents with DIY manual formatting, and cleaning it up can be a huge chore. People don't seem to realize that Word (and LibreOffice Writer) is actually a pretty good document processing and typesetting program, for when you want more features than Markdown/Adoc/rST but you don't need the meticulous precise control of *Tex. But you need to use features like footers, styles, cross-references, etc.