I agree it would be nice, problem is the random generator for the photos has to randomly select a photo from over a hundred thousand images 5 times, and it was taking its sweet *** time in doing so, and it would cause the main page to be slow to load (and all the rest of the pages as a result as it would hog the database servers time).
We were able to make it a lot less intensive for the server (and your browsing experience) by randomly selecting one persons galley, and showing you those images (or multiple people if their gallery had less than 5 images).
Not perfect I agree, but we work with what we got