Again I new here. My most critical process is change. Tagging becomes very valuable which dynalist does admirably. But changing tag(s) is even more critical as projects, events, learning, etc pass through various stages of completion. Trello which appears to be popular on this forum attempts to do this. Evernote has a very nice feature here which one reason I continue to use for review, recap, and retagging. (although I am testing gdocs in "outline mode" which features internal linking to chapter(or header designation) and I do like. Note my recaps may have many pages of information and research. (your mileage may be different.)
I would recommend the ability to multiselect notes and bring up a dialog that lists all my tags (by my order request) and have all tags specific to these notes show a "check or unchecked status" I would then be able to delete or change, and ability to create a new tag if necessary.
I then can move multi notes to different activity status.
Just my thought