Is that picture something you worked on Jon?

Another possible issue to consider when extending rafters outside the envelope is insulation and the trim detail, to be exact the fascia board and its width along with these exposed or not exposed tails can accumulate in an extra thick over hang, sometime its fine and other times its not so fine.

So terminate the rafter tails at the wall and let the sheathing or insulation system create the over hangs. Put top plates on.