I was wondering is the following would be possible: tag-as-you-type?
What is have in mind is an option whereby I switch to tag-mode in EagleFiler. I then select a file, and when I start typing a pop-up automatically appears with tags suggestions. I select the tag I want, press 'enter' and the tag is added and the next file is selected. When done, I switch to 'normal' mode again.
This would make batch tagging different files a lot faster.