I love this idea. I spent hours playing with pinosante's evo tool and I suspect this will be the same. Great tutorial videos.
One request though. Could you make an accompanying scene? Not that I can't add this to any scene, but I've found that a face may look good in default state but when you apply a smile morph or other expressions the look sometimes gets creepy. So when I create a look, I like to run it through the paces of smile, frown, surprise, etc to make sure it looks good in each. A simple scene with quick expression change buttons would be a great accompaniment to this plugin.