What we'd need is a Glitchsonian Museum of Art & History!!
Rather than having the images be permanent, it can be randomized so that each time you leave and re-enter the space the images on the walls change. Volunteer mods can take turns sorting through the submitted images and that way more of what is submitted by user will show up in the museum.
It should be randomized so there is a much greater variety. If we do have one, I think anyone should be able to submit. But we will need a limit if we were to do that, say one photo per week.