Things that need to be fixed/added:

• AUTH for API is sooo broken (nonexistent). Impossible to make apps for people w/o. Here’s a document on how to implement one.
• user object should pass leave status (and any other info you have, like last update)
• Not API per se, but not having groups is pretty lame

Other stuff, but that’s the stuff that popped out while I implemented my email digest app.