Well, I'm persuaded gentlemen by your reasoned argument: that these ships would have proven a headache for the Eastern Block fleets. That does beg the question though; why were they never built and commissioned?
Because they would have been very very expensive for very marginal gain. Each of these ships would need the full Control and Communications suite that an SSBN carries, which is not cheap. The USN also decided that it had enough Polaris Shooters in the fleet. Remember, this is the Era of "41 for Freedom".