Why sticking to only 16 stacks?

Can't cognitive functions be stacked otherwise than what preexisting ones we already have there? For instance, my latest sakinorva test placed my highest four functions something like this: Ni>Fi>Ti>Ne. Wouldn't that create a new type out that doesn't have to be a NiTe or NiFe? Why can't there be another as NiFi, or NiTi? The preexisting 16 stacks kind of limit us to think through only with what is supposed to be the dominant and auxiliary. That if we have a greater Fi than Te, some would straightly deny that person would be considered an INTJ. If I only consider my NiTe as that would create an existing type to associate myself with, how would I analyze and manifest my Fi and Ti which are greater than my Te. Should I disregard them? I don't think so.