Well...I was able to do this ...
I was able to get a two WS2812 leds on a digispark module to show up as a nano
Using the pro software from GitHub I had to ...
- change the USB id
- change which pins the USB data is on in the config
- hard-code the name in the firmware
- chang the bootloader on the digispark so that it boots directly to the blinkstick (optional)