This kettle might profit from some insulation on the outside. It would prevent heat loss and keep you from burning yourself on the outside.

A couple of layers of fiberglass exhaust wrap might do the trick, I think. Although stone wool overwrapped with aforementioned wrap or plain fiberglass strands would probably insulate even better. Both materials are inflammable.

Love the post about your cool kettle, but the aluminum is very disturbing. You are heating water in it and drinking that water. Aluminum cookware is bad stuff. The aluminum deposits build in your brain and never leave and starts the Alzheimer's process. I have seen it in 2 of my good friends who used aluminum kettles and pots. Also collecting rainwater from aluminum gutters is bad for your brain. Just trying to keep you healthy out there.