Feature Request: Expanded Tag editing powers

Hi Zendesk team, 

I would like to strongly express my desire for more powerful tag management features. 

The current ‘word cloud’ only view of tags is sorely lacking in abilities - and more importantly, there is no way to retroactively remove or block tags from being used. In our case, there are tags for ‘the’, ‘have’, ‘but’, 'your, and a handful of other VERY common words that I would very much like to remove from all tickets. Alas, that is not possible. 

This causes the auto-tagging feature to pick up on these and other common words that actually don't provide insights to what a ticket is about, making filtering or assigning tickets based on tags impossible. 

Pretty, pretty please, let us retroactively remove tags from ALL tickets. And down the line, hopefully a more robust tag manager. Thank you!