From 1991-1998 or so, Donahuoe was unquestionably in charge and held the reins during draft day. His title was "Director of Football Operations". Then in the 1998-1999 period of time, Cowher started pushing for more power and control over the player personnel side of things. This fits with league-wide trends during the late 90's and early 2000's. Coaches with a track record were being handed the GM duties as well - thanks Jimmy Johnson and Bill Parcells! Even coaches with no track record were demanding that responsibility during the hiring process. Cowher clashed with Donahoe over this role and the Steelers gave Cowher the ball after the 1999 season.
They then bring in Colbert as "director of football operations" from 2000-2010. While, the Steelers never really make these things clear (I figure they wouldn't even have acknowledged that Omar Khan existed if they weren't forced to) - it is generally felt that Colbert's main role was to run player personnel during the season when Cowher would be focused on the season. During the off-season cycle, Colbert and Cowher would share power - with an unquantified favor toward Cowher.
Then in 2007 Tomlin is brought in. No change in title for Colbert. The 2007 draft happens - fairly good. It is clear that Tomlin put a stamp on that draft with the double dip at LB with Timmons and Woodley. Then the "uneven" (at best) to "utter horror show" of 2008-2009 goes down. Shockingly, Colbert gets quietly re-titled prior to the 2010 season. IN fact, if my memory serves, this change does not immediately even come to light. In fact, I believe it went largely unnoticed for some time. Maybe not, I can not really remember, but here it is in black and white:
From -
http://prod.static.steelers.clubs.nf.../2012_MG_2.pdf (page 21/30)
"Colbert, 55, oversees the personnel area of the team and supervises the scouting staff. Among his duties, he is in charge of administering player acquisitions and transactions, including the NFL Draft, free agent signings and trades, and evaluating pro and college personnel. He also serves as the Steelers’ liaison with the NFL office and the other NFL teams on football matters."
In 2011 - same exact text -
http://prod.static.steelers.clubs.nf...edia-Guide.pdf (page 43)
Unfortunately, I can not find the 2010 or 2009 media guides to see if the wording for Colbert changes. I can find that this is basically how the Steelers do announce promotions for most non player and coach personnel.
http://www.post-gazette.com/sports/s...s/201108290216
So it does remain unclear as to what exactly has or has not changed with respect of how the draft process is managed. But I still remain convinced that the Steelers did not quietly re-title/promote Colbert just because it sounded good. Every time the Rooneys do something, it is for a reason. I believe, but can not prove that the reason is they determined that Colbert was in charge of the draft and the coaches were going to be involved and it would be a collaboration, but Colbert gets to break ties and make the final calls. I also believe this started in the 2010 draft and not before.