Here's my list:
- The 'Buzz' tab : Why is that thing there? If i want to share something with the world, i just would. New users don't know what Buzz is and it's confusing, maybe it's best to just remove it.
- Stream: Add more people: "Public" - Why not just add "The Whole World" as a circle - it's catchy
- "Suggestions": This is a very facebooky/spammy type of thing. I want controlled social, not to be constantly reminded to friend people.
- Post calendar: Since posts are usually long, and many people use their feed as a blog, add a calendar so we can browse the user's feed archive
- Threaded comments: Be better than facebook, allow fully threaded comments. Also, smaller icons on comments (and possibly smaller font)
I m gonna stop here. You can add yours own below.