We have a lot of regular features on our blog, and this plugin makes sure they have the same style throughout, even for less techy bloggers. I spend a lot of time setting up specific font colors/sizes, text layout, shortcodes, and post header images for certain features, and all my authors have to do is click to pre-populate dummy content. Then they just replace each area with their own text, and post!
The only issue I've had is the strange recurrence of \'s in saved templates. On the upside, they don't affect the functionality of the template, and they don't mess up the final content at all. They just look odd while editing.