Movable type is awesome, just a few suggestions here to make it even more awesome.

a way to preview the body of the messages while in batch editing mode. perhaps a button to view either the whole post or enough of it to know what the post is about if it has no title.

an option in the add url process in the new entry page to either open the link in the same window, specified target, or new window

A notes area to store ideas for posts and such.