I know I don't have Justin's stature in the community, but I hope developers will consider taking a look at the Food and Drink Menu plugin for restaurants that I released a couple months ago. It's also designed as a framework around which theme authors can build their sites, with a simple templating system, tons of hooks to filter and extend it with your own data, and support for multiple menus, shortcodes, widgets, etc.

Food and Drink Menu:
http://wordpress.org/plugins/food-and-drink-menu/

On GitHub:
https://github.com/NateWr/food-and-drink-menu

An introduction to the template system for theme authors:
http://themeofthecrop.com/2014/01/28/customize-restaurant-menu-templates/

In the long-term, I hope to build a suite of companion plugins that will work as a comprehensive framework for theme authors to build restaurant sites, with support for table booking and other useful features for restaurants.