Mitch's mechanics in 7 on 7 drills is never the issue. It's when our porous oline lets defenses through in less than a second and he is required to read progressions while under pressure that everything falls apart for him. Sadly without a preseason game I don't think there's much of a good way to evaluate his performance. I'm more concerned about the inability to see if any improvements have occurred in the run game until week #1 as that to me is the most important part of getting this offense jump started this year.
The Bears need to change what they are doing in practice with the QBs.
Since he is untouchable during practice, Trubisky snaps the ball, the defensive lineman beats the offensive lineman and "sacks" the QB. Trubisky then continues looking for a target to throw to.
That is not helping him with his timing at all.
I propose the following: when a defensive lineman beats the offensive lineman and is in a position of "sacking" the QB, he needs to use one of the two wet towels in his hands to whip Trubisky in the ass.
Since Trubisky will experience some pain, but not injury, he will have to plan on either getting rid of the ball faster or move to stay away from the wet towels.
While getting rid of the ball faster has the obvious advantages of him making faster reads or not being with the ball if and when an offensive lineman gets beat, practicing to keep away from the wet towels can also have a great reward: he will never get sacked during the regular season because a wet towel reaches longer than a hand, so Mitch will always be over a towel-length away from any defender.