It's good that the compact message header was included in SP1, but why in the world is it only available in the preview pane?? I don't like the preview pane and I don't use the preview pane. There are plenty of emails that I want to delete without
seeing them in the preview pane. I much prefer opening the email into it's own window when I am ready to read it.
I often have 3-5 email windows open at once because I have to cross-reference things and am busy in general. The header in the email window is enormous! The font for the sender has got to be about 30 point. I can read it just fine if it is 12 point. Tons of wasted space. Why add a feature for only one view?