Thanks so much for 'evangelizing' here. Not only does sticking to named styles help simplify formatting cleanup & design changes, but when you use named heading styles, you make Outline view useful for both navigation and rearranging a doc. (The Document Map pane also depends on named styles with heading levels.)
Named styles are even good for things not related to the outline, such as separate formatting for text in callouts, legalese/copyright text (fine print), or sidebars.
