RELATED IDEAS
Tag descriptions (to display in tooltip on hover)
Similarly to how custom fields can have optional descriptions. The same would be good for tags, so that additional information (essentially explaining the tag in more detail) can be conveyed to other users. This would reduce the need to either create long tags, or send comms to users explaining newly created tags.
I've also wanted this for a while, and went looking to see who else wanted it. Surprised there's only 1. Maybe we could bump this up a little?
Tags are massively useful, but you can't carry all of the intent in the name, far from it. The ability to have a description, and have it accessible to all users, will help a lot, as tags are often used in the interface with non-contributing but yet key stakeholder roles.