Martin is one of my favorite prospects in the draft so I am very happy with the pick, I think this selection solidifies what will be one of the best, if not the best OL in the league. It might not be that quality this year, but I think starting a year or two from now we will have a top 3-5 OL in the league for 5+ years.
The key now is to properly utilize what will be a dominant unit, when we get leads we need to grind out games on the ground. When we get in the red zone we need to pound it in, we can't be bullshitting around, passing the ball 40 times a game.
Now, that may not happen until Romo and/or Garrett are gone, but that won't be too long from now either way so whatever.
At any rate, we may regret passing on Manziel if he ends up being a franchise QB, although there is no way of knowing if he could have became that playing under what would have been circus-like circumstances, but I don't think we will ever regret taking Martin.