Rpg Maker MZ does support variables in item descriptions, so something is happening in this plugin that's disabling that functionality. I tested it in a new project with no other plugins except this one.
It would also be awesome to have the option to not display any image in the item description window. I want to have just the item name and its description displayed, with no image. I tried using a blank custom image but the space for an image is still built into the window. Any chance of this in the future? Thanks!