It would be really helpful to be able to hide/unhide selected widgets on a page.

I have experienced a few times where I wanted to be able to do this. For example, each module of my course contains a "Further Reading and Reflection" page, each of which has a consistent format and layout. When working with academics, they may not decide whether to use certain readings or not until after the class goes live, as it may depend on the needs or progress of the cohort. 

If I could build and format all the readings (and associated notes) in a widget, but "hide" until the academic tells me they want to use it, this would be really, really helpful, and save having to keep working on courses once they are already live.