Help me out here. I am trying to understand your point but I cant think of any situations where keeping a guy on the bench though the season and not letting him practice with the starters would help a guy become a franchise QB.
Logical, I would think the sooner he starts the better. With the only exception is if the O-line can not give him enough time to make decisions and he has to either force the ball out early or take sacks. I mean lets say he sits for 2 years and then is forced to start. If he starts making mistakes it would be safe to say they are his rookie mistakes and he needs to have playing time to master the fine details of being a starting QB. No matter how much game tape or practice he has he will never experience the same pressure and see the different defensive looks he would in a real game or even in a preseason game.
I assume he will get more starter time. Of that, I have no doubt. But Glennon needs time with the ones as well. As I have stated earlier once you start introducing Trubisky to the ones you start the clock on bringing in Trubisky as you start to handicap Glennon. And that is fine if you think Trubisky is close.
It is totally dependent on where Trubisky is at. You don't need to run with the ones to learn schemes and calls. Running with the one is about getting the timing down with a particular group of people. The "chemistry" portion if you will.
But if Trubisky still needs to learn particular calls, plays and how things run under center, running with the ones isn't going to be much different than running with 2s or 3s and the coaching staff.
In fact, it will take time away from Glennon and his need to get timing with the people he is going to start with on week 1.
I would rather the coaching staff not give in to media pressure and do what they believe is best for Trubisky's development. If that is running with the ones then so be it. If they feel he needs more work and that Glennon is best served with being with the ones because Glennon will start week 1 then so be that.