Allow following particular post comments

Hello,

i am missing ability to follow certain blog post comments.
If i understand right, i can follow comments to all posts and or follow only if someone mention me in comment.

But this seems not to be enough, because following all posts comments is too broad and mentions only is **too risky to miss the reactions on ones coment**, because some people do not use @username in their responses.

Please consider
A) implementing follow/subscribe button to particular blog posts.
B) auto subscribe the user to the post comments when he comment the post