Thank you for the plugin for Mass Tag Editing alone! I came across the plugin by chance - while searching plugins.
Why vital for me?
I did not know how to assign helpful tags when I first started a year ago.
I left posts without tags.
I moved my WordPress.com blog to W.org, and lost many tags.
Honestly, I don't know about the other features. I have been exploring them. There are so many. Mass Tag Editing is more than enough.
Thank you immensely for this plugin.