Hi, I know this bot for many years and I think that his job is fantastic. But I think that there is a problem: when the bot remove the file from an article it don't replace it with another. In wikis with a small number of contributors that is a problem because we are loosing lots of images! I wanted to propose that the place to delete a file include an optional parameter to add the name of a image to substitute the deleted file to another similar, when possible (Find & Replace utility).
Sorry if it's yet implemented, I don't know all the features of the bot.