I think you should display the best summary on the home page list, and a link to know more about and other summaries. Put a minimum threshold for votes to increase first-page quality, and voila, I have a newsletter that I would love to use.
Now I think that is a neat idea, a combination of the post and the best summary on the home page or like the first 2 lines of the summary, since some can run quite long, with a link for the rest of the summaries.
