There is nothing wrong with the bitless techniques Jamie, my father was "mouthing" young ones without bits over forty years ago, and very successfully too, some of the nicest horses to drive were produced.
Many people laughed at him at the time, basically 'cos they couldn't understand it...it was different to the old well worn beliefs so it must have been wrong, not sure if it could get any traction now, people do seem more inclined to at least accept some new thinking, especially so since Monty Roberts started showing people his techiques about twenty years or so ago.