Targetting 2.28.0 release:

- Remove category icons; they aren't particularly helpful (they are gone from the GNOME-2.28 menus too) and having them in Applications Browse draws the eye to the wrong thing - the category - rather than the right thing - the application icons

- Put a small gap (one line) between Frequent and the categories to make it clear that it is something a little different

- Sort the applications under Frequent by usage not alphabetically. Having them alphabetically makes it a useless collection of random applications "ever used" rather than a useful tool.