Let me summarize the feature list that I find lacking (somewhat in order of importance): 1. post button, 2. link to jump to the comment section (so you do not need to scroll to it repeatedly). 3. Threaded comments. 4. Edit own comments. 5. Like, smily button always visible (not only when hover).

You can edit your own comments, just click the 3 dots at upper right. There is also a jump-to-comment button at top left of every story, right below the 'like' button:

Post button coming. They are revamping comments in general. I do not remember if it will be next week or the following week.