My initial response was that I was all for it. But the more I thought of it, the more I thought that you can't regulate, nor control, stupidity. Bad and stupid people are still going to do bad and stupid things no matter what the regulations state. Bad guys don't obey the laws and I'm not sure how registering them will prevent them from using them nefariously.
Now, if they had it so that the drone cannot function until it's been registered, then maybe that would be different but there's always ways around things if a person is determined enough.
Eric
PS. On a side note, it's interesting that a 9 oz. drone would need to be registered by my 2 meter RC glider does not.