Maybe I am being jaded but I am not all that concerned with the OL unless we start seeing some injuries there. Sure it's the biggest question mark on the team but that is because it appears that every other positional group is stacked. We ought to be comparing them to other lines, not the personnel on our team,.
With the weapons we have, we should always have a reliable check down option and Baker can get the ball out fast. The way you beat a pass rush is hitting quick slants over the middle and now that we have a true #1 in OBJ, moving Landry to the slot is going to be a nice wrinkle.
Losing Zeitler stung and what we've heard about Corbett is on the disappointing side but Tretter and Bitonio are studs. If we can continue to see production from Robinson and Harrison, that will help.
Lastly, if the OL play isn't up to snuff early on, I have total faith in Kitchens to adjust the offense to make up for it - there's just too many weapons on this team, IMO, for a sub par OL to lampoon the season (unless its inability to protect leads to some injury to Bake).