Looks great! Can I ask: Did you by any chance add any clicks or resistance to the turning mechanism? That's the only improvement I can imagine making to the nano: that is, making it harder for the knob to be turned by brushing up against something. Though it'll help to have that bigger base.
Speaking of this, has anyone figured out how to add turning resistance to the knob on their current cord? I've tried rubber bands just underneath the knob, but that feels too kludgy. Even thought (in my more altered states) about getting a
smart dimmer plug to control the nano from my phone.