I would like to see some additions to Bookmarks to make them smarter:
This idea has been merged with Save Rotation with Bookmark.
1 a.) save dataframe rotation angle, b.) save title text (or any text in the layout for that matter) c.) save layer's visibility - turned on/off.
2 a.) save page size, b.) save background color c.) see BookMarks in other MXD's (kinda like My Places)
3 a.) Print Bookmarks list to printer, PDF or other image format b.) send BookMark(s) to other users in your office or around the world or post to web for use in ArcGIS Online/explorer or Google Earth.