Among the people testing the Movable Type v4.0 beta installation I've made available, yesterday somebody placed an interesting note on the Extended Entry field positioning in MT v4.0 vs. the Windows Live Writer model

Here it is:

While I love MT's new rich text editor, hiding the "extended" part of the post in a second tab makes it harder to drag and drop content. I like Windows Live Writer 2.0's mechanism of inserting a visual marker that divides a post so you can see the whole entry including the dividing line. The dividing line becomes the thing you manipulate, moving it around and placing it where it should go in the text. This is a better conceptualization than a separate data field. It's more writerly, less geeky, and poses less risk; I hate moving text around, feel much safer moving the divider.