an idea recently entered my head.....like less than 5 minutes ago.
regarding narrators vs taciturns and subtypes
something along the lines of

would a narrating p narrate perceptions and question judgements?
would that be normal or would that be a p subtype of a p?
would a j subtype of a p narrate judgements more than perceptions?
or would that be a j narrator?
would a taciturn p question perceptions and narrate judgements?
would that be normal or would that be a p subtype?
etc.

i don't remember which types are said to be taciturn and which are narrators, i'll have to look that up before i can go much further.
(Looked it up just now, if mcnew's chart in the article section is correct (joy's chart confirms), then
Interrogative = Alpha NT, Beta NF , Gamma SF, Delta ST
Declarative = Alpha SF, Beta ST, Gamma NT, Delta NF )

but i just wanted to toss this idea out to see if anyone was interested in discussing the possibilities of this