As the boxes in the NFL pre-draft process are checked off, the Steelers’ draft plan is beginning to take shape. With the most significant moves of free agency and trade season completed, the Steelers have filled in some of the major holes on their roster. They added three new quarterbacks, a starting inside linebacker, a starting cornerback and a starting safety. At receiver, running back and defensive line, they added reserves to bolster depth behind starters. And at offensive line, outside linebacker and tight end, they’ve done nothing. It’s not noteworthy for the latter two positions because the Steelers have starters and top reserves in place, but when it comes to predicting how the Steelers are approaching the draft next month, it is significant that no additions have been made on the offensive line. It’s the biggest clue in predicting their picks in the early rounds of the draft.