I think this is a good idea. One question: in the “Zoom Close To Data” example on the bottom right, why is the right side of the cylinder in the center of the image instead of the upper right, as one might expect?
Another thought - instead of introducing this as a new Zoom mode, why not replace the current zoom with the closer zoom? It would avoid having to explain to people “well, Zoom To Data doesn’t zoom real close enough, so you can use the other Zoom Close To Data button that does”. I think this is more of a fix for Zoom To Data than it is a new feature.