Wow! I am busy playing with all the templates for the new Blogger in Draft! Back soon, but I think they have a winner with the new template designs.
So far, it seems you can control the width and number of your columns, although I think I will have to resize my banner to make it stretch all the way across the new page. What do you think of this new feature? (I do like the birds flying out from the side of my too-narrow banner, though.)