Well, a first version of the demo is online, I would love to know what you guys think.

There's a screencast on Vimeo that explains things a little: https://vimeo.com/83603848

To try it out: 1) visit http://snaplivedemo.com/new/ and wait until your demo is created 2) refresh the page 3) have fun playing with it :-)!

This is just the first version, but...