I do not think that, whatever side of the ‘trinity’ debate you are on, that it makes any difference - as long as you are living whatever truth is clearly taught in the scriptures. If you want to add metaphysical speculation to that, fine - I think you can do it without warping the scripture.
If you don’t recognize the Council’s philosophy, fine - as long as you understand what is clearly taught in the Bible as to who Jesus Christ is, and follow him.
I’'ve been a Trin, now I’m not - and it has not made any difference to me. God the Father is still God the Father, Jesus is the Son of God (whether he existed prior to his birth does not concern me, except as an intellectual puzzle), messiah, King - and all the other high offices he holds under the Father’s wisdom. All praise is to be given.
I really don’t see what the problem is anymore, unless someone makes the belief THE basis for fellowship, or considers the ‘other side’ as somehow ‘lesser’ in wisdom or insight or etc. The brightest minds and most sincere Christians have differed on this since the 4th century or so; and while it’s a fun intellectual excercise, let’s not make it definitive, unless we are willing to add to the scripture.