Sounds interesting, though I wouldn't trust MongoDB with my (or anyone else's) data.

The problem is that, while building the core of this is easy-ish, the end result should be something very complete & easy to stand up. Our prototype functions (barely, mostly just due to a lack of time), but it's not polished or complete. It's not smooth, easy to use/administer & it doesn't include all the little details that go into successful software projects.