I disagree. The line has had some bad games this year, but they've had good games as well. I think o-line is definitely a need, but I think it's being blown out of proportion. This isn't the 2009 o-line we're talking about.
Sometimes even great offenses face dominant defenses and get manhandled. It happens. Look at the '99 NFC championship against the Bucs... even the GSOT got smacked around up front at times. Those game just happen. Even if we have an All Pro line, there are still gonna be games like the Arizona game.
Robinson entering next year with a season's worth of experience under his belt, and a chance to focus only on LT in camp, will be a huge upgrade by itself. Beyond that, I think you go after a FA center, draft a G during Day 2 of the draft, and that's about it.
We're going to remain a .500 team if we enter next season with the same quarterbacks. We just are. To ignore the most important position and our biggest need, just because the line isn't perfect & had a bad day, is a horrible call IMO.