I am not sure what youo want. "Latest" has a count associated with it. Why would you want to display all images there? Did you create categories to hold images? Are your attachments displayed in the Gallery?
I never use the latest images feature but I just checked it and on my board it showed the most recent 100 pictures.
I then edited the entry in AdminCP under vBGallery by Scandal to 200 and now it shows 200. I am concerned that if I set it to 10,000 it will take an hour or two to load.