set up different view types between Multiple Entries and Single Entry
for example the Multiple Entries view is set as a Table View, but when drilling into an entry it is formatted as a List View.
Would be helpful for form entries with many entries, each with a lot of fields as a simplified summary could be shown via the Table View, but a formatted summary of the entry with Subheadings and Listing Titles is displayed when selecting the individual entry.
Preston Davis commented
Also, for example, the ability to have a full page layout (no sidebar) on "Multiple Entries Layout" and a Sidebar layout for "Single Entry Layout".
+1 – being able to have a table view that linked to a DIV layout entry would open up for a lot of possibilities!