Thanks for asking...
I'm just wondering if smush.it could process images locally instead of send o receive to the yahoo servers.
at this time there are no plans to bring this local. We did look into this some time ago and the requirement of the local server with the specialized image processing would be impossible to package into a plugin that would work across a wide range of server configurations.
Recently I check the bulk smush out, which was a really bad experience; and you can't smush hundrads of images one by one.
Agreed. We are looking at some WP Cron based logic so that you don't need to attend to the bulk processing yourself. Just upload the images and the scheduled WP Cron will then process the image via the Yahoo! service behind the scenes.