We do not have 100s of images in our 'images and Files' area in the Design Studio yet. Some times for a new email campaign, we want to find out if we have an image we can use already uploaded in Marketo. But to check that, one have to 'click' on an image to see what image is it.
Once clicked, the image opens (and replaces the listing of the images).
To see the next image, one need to redo the same action again and again.
Add to this that there is no 'back' button of functionality to go to the listing of the image folder again.
It can be very time consuming process to find an image this way.
Granted, we can use naming conventions to reduce this scenario but though it would be a low-hanging fruit for Marketo product team to enhance functionality quickly.
Suggestion:
Why not add a 'hoover' functionality. While browsing the list of images (or even files if possible) Marketo can show the image or file preview in a small window. Thus pinpointing an image or file will be very fast as hoovering mouse over list one by one.