I feel similarly, but the bolded is why I would want to move on. If he's not playoff caliber, try someone new. I don't think Tyrod will ever get much better at seeing the field. His injury risk will go up each year as he gets older though.
WGR gave a stat the other day that for the year, he only attempted 33 passes more than 10 yards downfield between the hashmarks. His athleticism helps the run game and his scrambling allows him to somewhat make up for this deficiency, but it's crazy to think about how much of the field doesn't need to be defended against him.