I think you're very hard to type, Night. I can see you as INFJ, but you'd have to be a different kind of INFJ than I am. I'm not even positive that I am an INFJ, so I don't have a lot to stand on. I suppose eNFP or INTJ is still possible as well, but I don't see ENTP at all.
I always justified this by saying that INPs were judgment dominant, and thus had already made their decision on internal principles (Ti or Fi), and were only flexible about the way they presented this internal system, and about allowing others to disagree as long as they weren't forced to go along with it themselves. It seems to have held for me.
ENPs seem a bit more capable of seeing other perspectives, although they'd rather change the subject than their perspective on it, and it can be hard to get them focused on changing perspectives. Unlike INPs however, they seem to be able to do it easily, even though they still don't seem like they want to.
One thing that all NPs seem prone to, in my experience, is exaggeration in order to make a point.
In other words, what you're describing as Ni is what I would have attributed to dominant Ti or Fi previously. AFAIK, Ni is mostly about looking at a subject from multiple perspectives, although Te or Fe might argue for one perspective.
I suppose I'm curious now... do you think that one of us has mistyped people, that we've both met people who mistyped themselves, or that we've interpreted the same behavior in opposite ways?