Maybe I am in the minority, but I don't think the line has been all that bad. There is definite room for improvement. I'm not saying they don't need to step up and make more holes for Gurley. But the pass blocking has been quite good, and I don't think there is any line in the NFL that could consistently get push in the run game while being outnumbered nearly 2 to 1 in the box.
What this o-line needs is for Goff to develop to the point he can start, so that teams will stop stacking the box. Nobody is scared of Case Keenum. Full credit to Keenum for making just enough plays to win. But he'll never be a particularly dangerous QB, and this is the result. We also don't have a true #1 receiver. If we did, he would warrant attention even with a poor QB throwing to him. So that compounds the problem...