-- Put the poster's login name into the title bar. Currently, it only shows the "friendly name", which many people turn into something Artistic, Creative and Incomprehensible. So if all I have is that plus an icon I don't recognize, I can sometimes lose track of who the heck I am responding to here. (Since I often stack up a bunch of tabs to respond to later.)
-- Put the date into all comments. When I'm going back several days later and looking at a long thread, it's sometimes hard to figure out exactly how old the comments are.