The main point he makes, that I am going to crib, is that original sin is not a distinctly Western Christianity concept. Rather, it is really in both major traditions of the church, Easter Orthodox too. I’ll probably need your help fleshing that out more clearly when the time comes. As you put it:
But the net result is the same – both primary traditions of the Church assume that sin is inherited by descent from Adam. Our attempts to accommodate historic Christian doctrine to modern scientific findings needs to take that into account, and to demonstrate clearly just why the Fathers were wrong about it, if we end up rejecting it.
If that is understood, it will help people understand the significance of what we are putting forward. There is not reason to say that the Fathers were wrong in light of genealogical ancestry. The fact that this arises in both Western and Easter traditions heightens the problem, and increases the value of the solution.