Uh.... Again, you do realize that S&S couplers alone typically add $1000 to the cost of the bike, and a Rohloff hub is usually $1700?

If we start with a Salsa Fargo frame, S&S couplers and a Rohloff, that right there is $3100. That's not even including wheels.

Again, if that's what you like, then by all means that's what you should try to build.

But why do you believe that someone could put out your Ideal Mass Production Touring Bike at a price that is even remotely competitive to seasoned and well-respected touring platforms like the Trek 520 or Surly LHT? Even selling the bike completely unassembled over the Internet is not going to whack the price in half....