Isn't a big point that you don't really need a "content heavy" site? If you don't need the content in the mobile version - why do you need it in the desktop version?
- No 'Featured Story' slider carousel.
- No story excerpts.
- No large story thumbnail/header image.
- No navigation aids, i.e. recent stories, you might like, trending, etc.
- No fat footer with sitemap on every page.
- etc etc etc
This is just on a news site. Imagine if a site features other content, which on a desktop would be/is fine, but presenting it all to a mobile user would be overload, and a slow page load experience.
Also, seriously can you point me to sites that have done this, and still don't look baren on a desktop?