The quarterback making game-changing decisions has been a part of the game for decades. TO's QBs always had the option to audible to a different play depending on defense. TO would send in a call with the running back or receiver, but if the defense lined up in a manner that the play wouldn't work, QB had the responsibility to audible to a different play. Today, defensive schemes are more sophisticated than ever. There is no way that OC can call a play and take all responsibility to make a read away from the QB. Well, you could do it, but over the course of the game you will run the wrong play into the wrong defense as many times as not. Those who say take all decision making away from the QB are naïve. A coach can't take decision-making away from the QB in today's game and be successful.
Unfortunately, we apparently had no one on the team this year with the athleticism necessary to win at this level, so we have TA. Coaches have to call the offense the way it needs to be called and cross your fingers (or hold your nose some might say), and hope against hope, TA does the right thing. It has worked out on occasions, such as the throw against MSU for the win, and other times not. Does anyone really think the throw to Morgan, Jr., into tight coverage when there were options underneath was a great decision or throw? TA saw the one on one match up and threw the ball up for grabs, just like the 4th and 1 play (granted down and distance were different). Morgan made a great adjustment and the defender fell down or that would also have been just another pass thrown up for grabs that didn't work out.
Unless we get a QB in here next year who has D1 athleticism and arm, and the mental makeup to avoid the temptation of the all or nothing plays and the mental discipline to handle making the right decision way more times than not over the course of 70 or 80 plays, it will be more of the same next year - and very little the coaches can do about that - other than development a top 10 defense to cover up or hit the jackpot on an AA type running back emerging. Thus is the legacy of what was left to them by Bo.