Also for Time Tags!!

It would also be cool if we could have a place to manage all the tags and perhaps see how many tasks the tag is attached to (including closed, active, and subtasks). That way we can delete tags that are no longer in use at all.

Tags need to be manageable at the Everything level. While a Tag is Space specific, that only works to a point -- if I create the same Tag in multiple Spaces and then filter by this Tag at the Everything level, these "two" Tags are indeed treated as one. But that is unfortunately where the similarities end... If I want to delete these Tags from all Spaces, I apparently need to chase them all down one Space at a time, which is severely painful. Given how easy it is for my users to create new Tags, this makes management a chore (to add some clarity, we've decided to do away with a large swath of Tags in lieu of some Custom Fields, and I need to delete the Tags to ensure my users stop using them).

Is there a list of TAGS where you can see TAGS not used and get rid of them?

I noticed this is not an option like it is with statuses.

Also a less disruptive appearance to the tags would be great! I find myself using custom field labels in place of tags, because I really dislike the way the big colorful tag takes my attention away from the task titles.

I would like to have groups of tags, so when you create new space of project you choose to have tags, but also choose which tags groups to see. This way you can have tags for different tasks but not one "a loooong list of tags" and it's easy to organize everything. And ofcorse it shoulg be global across all spaces.

+1 for hierarchal relations between tags