The fact that it's NOT consistent with the Church Fathers is a HUGE problem. Being Christian means we are supposed to receive the Faith as it was understood by the Christians before us. If we allow the Faith to be changed somewhere along the way that contradicts what Christians before us believed, then that is obviously a problem. It means that a "new Faith" was essentially created.
Why should we care how others before us perceived it if it conflicts with Scripture? We're under the curse of disobedience in Deuteronomy, so of course our understanding is going to be clouded and change as the veil is lifted. Dual seedline is the understanding that comes as a result.
If you don't "hold firm to tradition" as St. Paul tells us, then this means you have fallen to prey to "false prophets" and are off the mark of Christian orthodoxy.
What way in particular do you think it conflicts with Scripture?
"Therefore, brethren, stand fast and hold to the traditions which ye have been taught, whether by word or our epistle."
Word, as in the Scriptures, not the imagination of some church father, rather than the words of Christ.