I've made a little tool to ease my work editing blueprints.
It's very simple and unappealing, but it's a huge time saver when editing these kind of files.
It parse any "units" directory for all blueprints, make some filtering categories (on top), then you can edit the values in a simple editor.
As it can be useful for any coder, I will release it on open source as soon as I'm done polishing the corners.