1. Font face selection and font size are in HTML form selects.
2. Font color selection. Highlight or background color uses the same color selection control. There seems to be a bug here, where Italics is shown toggled on when the selected text is not italicized.
3. I guess Yahoo! users like emoticons. :)
5. Text alignment is rolled into a single drop down.
6. List style in a single drop down.
7. The message composition form in the context of the full page.