I have a thought for a new feature, but it might not be the easiest to implement. Many of us now are setting up pages with menus and side-bars and all that jazz, and when we get 10s or 100s of pages, doing page updates can be very time consuming and difficult. I was thinking that it would be awesome to add a "replace image" option. Such that, we could upload one new image, and it would replace all instances of a current image on our wiki. With the current set up, of creating a new folder for each new image, to prevent name overlap, I'm not sure how easy this would be to implement, but I do know I'm not the only one that would take heavy advantage of this feature.