Anony mous....I think you are correct. What was called Arianism was essentially a logos theology. An attempt to bridge the Logos of Philo et al with a historized understanding of the Jesus of the Gospels. I also liked your comment regarding the psychological underpinnings of the Trinity. It makes sense to understand your a singular deity as all things, Wise and Fatherly, Vital and powerful, and pervasive and omnipresent. Giving faces to those aspects is how humans understand things. We make models and symbols to conceptualize intangibles.
JWs unknowingly have done the same, they just dumbed it down. Either, or should I say any, conceptualization of deities will suffer from scrutiny and rational analysis, because they are the product of poets and diviners, not scientists.