I wouldn't expect to actually see much. A series maybe.
In all honesty it really doesn't matter how well the defense plays. Dallas was fortunate to make it through the season with Romo starting last year and if they don't address the OL and get better play, they'll be playing with fire again in hopes that Romo doesn't suffer some injury.
I want to see the OL at least be able to slow the DL down.
There were times where Free looked like he was on a 2-step delay and was chasing the DE from the snap and there were other times where guys like Mack simply didn't do anything. One of those times was the play against the Bucs where Romo was crushed.
The OL has got to be better.