Allow users to view deleted comment history
89560
Allow users to see deleted comments on their own posts
155540
Can I view a list of my "great comments", perhaps in my profile?
115318
Can we get an indication comments are hidden between the comments?
131469
Obsolete comment flags should notify the original commenter in advance of moderators
103111
Should I be able to see the first few lines of a deleted post from my flag summary section?
105407
Personal history of recently viewed questions?
11221
Link comment flags in the flag history page to the flagged comment, if it still exists
113483
Allow diamond moderators to comment on deleted or locked items
99742
Allow moderators to see delete/undelete activity on users' profiles
125048
Why can't I comment on my deleted posts?
105321
Display the Number of Comment Upvotes In Recent Activity Pages
99109
Deleted comments persist in the global inbox
22176
Keep short history of user display names
79653
Building an archive of deleted questions
18324
Is there a way to see the history of questions protected by me or another user?
43030
Can non-10k users see comments left on their deleted content?
129908
Allow flagging own comments