Nice Analysis but I am somewhat surprised with the Chris Miller review.
Accuracy with decent arm strength goes a long way. Brady, Montana, Warner and Manning did not have rocket arms but they were accurate. Goff is really good right now but realize he will get much better a going through his progressions and finding the open man. He will get stronger and probably faster which will help with the off schedule plays. I think he is a decent athlete probably better than average for a QB which he doesn't get credit for. I have see him run out of the pocket 2 times this year where I was surprised by his speed which seems to have improved.
Anyway thanks for posting that analysis