I've recently switched from Media Center Master to Media Companion, and there is one feature that I really liked about MCM that is missing from MC.
Currently, when scraping in MC, nfo files are created that point to images on the web, and local files aren't used. For instance, a ".actors" folder can be created for actor thumbnails, but the nfo file still points to the http address where the thumbnail came from.
Could MC be set up like MCM, where ALL images are downloaded, then there is a "base path" such as \\server\video, and then nfo file actually point to the local images? This eliminates multiple clients downloading the thumbnails when you've already got them on the local server.