I'm not sure. From an implementation POV, re-starting wUSB (https://en.wikipedia.org/wiki/Wireless_USB) again would be an easy way out - for a lot of things that can be done over Bluetooth there are USB device classes and drivers already, so all that would be required on the OS side is support for a discovery/secure pairing mechanism.
Obligatory xkcd: https://xkcd.com/927/
I'm not sure. From an implementation POV, re-starting wUSB (https://en.wikipedia.org/wiki/Wireless_USB) again would be an easy way out - for a lot of things that can be done over Bluetooth there are USB device classes and drivers already, so all that would be required on the OS side is support for a discovery/secure pairing mechanism.