The article linked below mentions a bike that seems to be a limited/custom built in Portland, Oregon (USA). A place my sister-in-law just returned from with a few nice cycling related gifts.
Tour on this: Proletariat with Gates belt drive Nuvinci n360 or Alfine 11.
Essentially it is a super-commuter/tourer with belt-drive 11-speed Alfine gear hub with disc brakes. Which is what I’d like to replace the Bad Boy 8. There’s nothing specifically wrong with the Bad Boy 8. I’d prefer to not have a chain to keep lubricated and clean. Since modification of the Bad Boy aluminium frame is not a very clever option I would rather replace the bike with what I prefer.