The Hillary delegates are not really part of the plan. Once the battle starts, plans can no longer be fully counted on and sometimes really good but unplanned events ake place.
The clandestine delegates are serendipitous. They are good things that could have not really been planned.
My guess it that the only real effect will be to cause trouble. The very thought of their existance will create anger, paranoia and confusion. Once this snow ball starts rolling, there is no way to guess how it will gather hatred and bitter vitriol.