There is nothing accretionist about the Church. Public revelation is closed. The enhanced understanding of those revelations with continue until the end of time, however.
You really sell God short on His ability to create the greatest piece of literature ever. The way you interpret the Bible, Jackie Collins could have written it. There are endless treasures beneath the surface, which are waiting for discovery.
So far as 'man-made' goes, I suppose that applies to the canon of the Bible, too? I mean, talk about man-made! Forty or so Gospels whiddled down to four? Are you sure the men who entered the Synod of Hippo were acting at the behest of the Holy Spirit? Could be they were just acting as "men"? Hmmm.
BTTT.
Well stated.