I wish Trubisky could be a more accurate deep ball thrower. He never throws the receiver open. They always have to adjust to the ball.
If you look at the top QB's Brady, Rodgers and Mahomes they throw it out to the open spot with some arc and the receiver runs to it. With Trubisky they have to make a circus catch to have a shot more often then not.
This is the one thing Foles did well. If you took the best of both QB's and mixed them you would actually have a good QB.