Why there isn't a feature that lets any user on SO to request other user to answer their question?
91504
Ask a question and notify users on specific users list
47803
Answering the same question across the site
63464
Automatically upvote questions you answer - Unless you say otherwise
35561
Why don't high rep users ask questions?
103941
Allow users to migrate their own question
50556
Force Accepted Answers on Questions by Inactive Users
29446
Any way to send a personal message to another user?
146576
Askers should be able to close their own question as a duplicate
136559
Need to ask a question anonymously
147652
Get a notification when new answers are added to other people's question
25105
Suggestion phrased as a question
9508
How to reply to one user among two having same names?
60332
How can I ask question from specific users about the reason for closing a question?
127692
One comment per user per post but be able to reply to existing comments
146448
Can we implement a dead time on answers for high reputation user
55449
Allow authors to self-answer their own protected questions even if they don't have enough reputation
131901
Make closing question users post a conscious explanation