Suggestions for Improvements on discussion forums

1) better formatting options. maybe the use of <tags> that get rendered after posting. </tags> for bold, italic, quotes.
2) the ability to respond inline . Just like you would in an email. This has some benefits as the context in which the person replies is very clear. This is very beneficial where most people are commenting on something the other person has written.
3) The ability to PM other people,without it being a public post.
4) I still can’t figure how to upload and edit my profile picture. ( using Version 52.0.2743.116 Built on Ubuntu , running on Ubuntu 14.04 (64-bit))