if anything, using bluetooth could open up new attack vectors---i'm mainly thinking about privacy since the bluetooth stack can transport pubkeys and addresses.
That is what I think as well. There haven't been any issues with the Bluetooth service... yet. That doesn't mean there isn't one that hasn't been discovered yet. So I look at this way. The Bluetooth is one additional security risk, a possible one. I'd rather keep the risks as limited as possible. Sorry if I sound to negative