P: Survey View (N) should get a Zoom 100 option

Wish is to have the ability to zoom into all images shown in Survey View to a specified zoom value, e.g. 100%. E.g. use Z as shortcut. Panning via Spacebar + Left Mouse would be essential in such a mode too.
Reason: Survey view is useful for culling images quickly. However, as I often use a luck shot approach in sub-optimal lighting conditions I want to be able to quickly select a group of images in Library mode and set the zoom to 100% to find the one which is sharpest. Then I would mark this one for keeping and be done quickly with the rest. The Compare option kind of does that but only allows 2 images to be compared and that seems unnecessarily tedious when going through dozens of images.