Allow users with lots of rep (3500?) to promote “comments” to “answers"
7768
What should be done with questions that have been resolved as a comment instead of an answer?
92948
Allow Comments on Deleted Answers
10343
Make voting activity on your posts available on site metas (what you would get from rep if metas had rep)
68981
Improve the usability/intuitiveness of direct comment links
58991
How do I enable comments for user profiles?
139516
User profile comments
105542
Allow flagging a comment after upvoting it
23297
Provide a means to reward users and their answers (decoupled from bounties)
94423
Transfer upvotes on comments to stars in chat
105916
Auto-expand @username in comments to keep the username up-to-date
105735
Flag individual comments or flag once for many?
34339
Lower the amount of reputation needed to comment
101134
Bonus Reputations for starters, new users
110606
Can we get a comments only lock?
44432
Allow anyone to comment but hide low-rep users' comments until reviewed
60001
How can I post an answer with many links, or earn that privilege without being allowed to post such quality answers?
131911
High rep users suggesting edits to authors