RESTful API use cases

Hi all,

I am close to completing my hypeGraph plugin, which is a fully RESTful API provider for Elgg. 

I am currently working on defining more consumption endpoints, and I would like to find out if there are any use cases that I should take into consideration. I believe this will be a good starting point for mobile Elgg clients, as well as outsourcing more of the rendering work to the browser.

Ultimately, I am planning to build a JS and PHP clients to go with the plugin, as well as a GUI for testing.