I think that the OL will look much better when Wendell returns (probably at LG) and Stork returns.
Basically, we will have replaced Connolly with Jackson, and have given Stork and Fleming another year of development. The future is fine at the position with Mason added to the mix.
==========
The elephant in the room is the future at OT. We have Vollmer and Cannon through 2016, along with Fleming (who hasn't shown a lot). We couldn't find a mutual deal with Solder before this season. Solder has even more incentive to wait for free agency this time.
As of now, we will go into the 2016 season with Vollmer and Cannon in the last years of their contracts, and with Solder as a free agent.
It would be Belichick's style to extend one of three as long-term insurance.
And, of course, no one would be shocked if Belichick reduced his cap by trading one of these three now.