Add the ability to create any tag synonym to the "trusted user" privileges
67290
Can trusted users be trusted to suggest tag synonyms without a score of 5 in a tag? (on smaller sites, not Stack Overflow)
63670
How can I intercept an item being crafted and replace it with something with a 'canplaceon' tag?
16310
Instant approval of revisions for users with edit privileges
158369
How to Disable new terms (free tagging) with Taxonomies?
95873
Add "tag categories"
21351
Could we make tags imply other tags?
35170
Creating a new tag before you have enough rep
101982
How to add tags to files in Windows 7 so that they appear in search results
89388
How come I cannot improve, only accept/deny, tag excerpts through suggested edits?
29472
How to create a permanent "alias"?
123872
What's the possibility of adding a "Did you mean ..." in the tagging system?
118095
Let any site onebox with  tags
20008
How to show  tag literally in / tag?
153733
How do you give people prefixes for their usernames?
119
Add ability to Flag a User or Suggested Edit
97678
Can we allow 7.5K users  to suggest tag synonyms without a score of 5 in the tag?
105916
Auto-expand @username in comments to keep the username up-to-date