Especially when working on a small laptop while traveling, I like to use a couple of zoom levels that are non-standard, and have to keep retyping the percentages in the bottom left of the screen.
For example, I frequently want to zoom to the width of a page's text frame, not including the margins, which on my current laptop is 100%. That's easy because it corresponds with one of the present zoom levels.
But I also frequently zoom to show a spread's text frames; I don't want to waste my precious laptop screen space on the margins away from the spine. That's 45% which I have to type in every time. I would be so happy if I could add this as a favorite to the other preset levels.
"Zoom to page text frame" and "Zoom to spread text frames" would be great additions to the list.