Basic use case: Providing intelligible, properly formatted comments on Flow boards at mediawiki.org without needing to switch between editing environments.
Right now, a simple reply to a question like "It has a {[ instead of {{ a in the third line" isn't possible with VisualEditor in Flow. Workarounds like putting the code in quotation marks sometimes produce problems (do I need to type "[[Link]]" or just [[Link]]?). Please expand the simple toolbar to offer a "code" option for character styling.
See also