GMC68, Mac does not have the credentials for becoming a head coach. His bio has nothing in it to indicate to anyone that he would make a good head coach. At best, he has been successful as an offensive line coach.
Mac was made interim head coach for the one bowl game. He knew time was short and all he could do was the same as any other person in his capacity at the time, turn the offense over to O'Brien, the defense over to Roof, and get out of the way. That is about his contribution to the effort.
Even if he had provided more, one game is not an indicator of one's ability to be a head coach.
The biggest reason Tech won the bowl game was not Mac as interim head coach, but the fact that O'Leary was out of the way.
There was some animosity among athletes who were relegated to the bench because of mistakes. Since GOL was no longer around, the players were looser and wanted to produce in a more positive way.
It is no accident that Sean Gregory had a good game against Stanford.
Mac actually contributed very little to the win. He just got out of the way.
Don't kid yourself, Mac will never be a head coach anywhere. He will at most be either an offensive line coach again someday, or, possibly, an offensive coordinator. I doubt he will reach the latter.
As I stated earlier, no AD or committee anywhere in the world would have taken his qualifications and made him a head coach. That is only a dream in someone's mind.
Can you imagine this situation! The committee hires Mac as the head coach. He is an ex UGA player and has a dorm named after his family at UGA. The Tech family screams because an ex UGA player is made head coach at Tech and the influential alumni start withholding their contributions.
Many GT supporters cancel their season tickets. Mac takes the team we had this year and goes 7-5 and gets killed by UGA 52-7. Tech fans hang the committee and Braine (and not in effigy). Tech drops football.
The AJC has a ball with this for years.
I could continue, but you should get the picture by now.