Makes sense. I think you're right about the difference between Ne and Ni: Ni is more concerned with the follow-through of an idea, therefore minimizing the number of ideas, whereas Ne is more concerned with getting ideas out there, as many and as varied as possible with usually less follow-through.
It seems that Ni wants seeks a definite framework to capsulize the possibilities it sees. In the case of the ENTJ, the framework is to make it enforceable; in the case of the ENFJ, the framework is to make it workable; in the case of the INFJ, the framework is to make it communicable; and in the case of the INTJ, the framework is to make it infallible.