Some features I would like to see in conversations:

• Filter Conversations according to type (for example show only SMS)
• In IM conversation display user is typing, both ways.
• Need more statuses (away and invisible for example)
• Show now playing

Please point out if any of those is already implemented.

okay, found out how to have more statuses! I'm impressed actually how it's implemented in a way that resolves conflicts between multiple accounts' statuses.

please tell us how / where you found it...

When you go to availability through the status menu, you'll find "New status" button. I initially thought this would be like pidgin's status (like a personal message or something), however it's not. Clicking on it, will make you make you own status (like online/ busy ..etc) and specify the associated real status in every protocol. So picking this status later from availability will switch every protocol to this specified one.