In PageBuilder, I envision an include selector that allows editors to add stored HTML, so that frequently-updated items, like say dropdown option selectors, can be managed in one location.
Additionally, I would like to see the same kind of function available as an option within an article -- much like a power up -- so if we want to promote an upcoming event, the HTML tease or link to the event signup page can be selected by editors or reporters during the content creation process, and the tease/HTML code can be turned off (disabled or hidden) once registrations are closed.
The goal is to maintain HTML code in one place that can be utilized by editors/reporters whenever they need to add the code inline within an article.