The current "Upload Image" button (in several places) reminds me of a drag-and-drop target used in some modern web apps, so much that I have multiple times accidentally dropped a file on it only to have the file open in the browser (causing my work to be lost). Clicking this button actually opens a dialog with two options (upload and gallery), so renaming the button might be sufficient. A fancier option would be to add a drag-and-drop target near the button, so I can just drag art into the editor. This might also work for the gallery, as a tray or something that I can drag things from.