If things hold true to start the season as they are now, and I emphasize, "if", with Colon on the left an DeCastro on the right, I look for the Steelers to do more running to the left this year than in years past. Normally we saw Kemoeatu kicking out and pulling to his right for the run game. Now with DeCastro on the right I can see doing some more left side attacks.
The right side has been the strong side for years but even with Colon now at guard, he doesn't have the quick feet that DeCastro or even Kemo have. I can see Colon being effective in the power game right up the middle and DeCastro kicking out and leading Redman right through the line.
The best part I think though is, if this line holds up and pans out we'll finally have legitimate options to run virtually anywhere and be successful.