I think the buttons for the File, Edit, View and Setup menus should be moved to tabs along the top of the window. I think this would save on space that the big buttons take up in the main window. Unless there is a reason why this wouldn’t work of course.
Regards.
edit: Also is there a chance of changing the undo/redo buttons so that a left-click undoes and redoes a single action (as normal) and a right-click brings up the time menus?