I already said in another thread, but i guess, the producers of the show want to transform and show, how a cop like Gordon would work together with a masked vigilante. The new police chief is the stereotypical cop by the numbers and this isn't the route Gorden is taken right now. With the ending of the new episode, he is pretty much on the other darker side.
I would predict, that after we saw the consequences of not killing a dangerous criminal, the second half of the session will be the consequences of killing someone. I'm pretty sure, those will even be worst and at the end create a balanced Gordon. Someone who will bend the law, but never wants to break them again. Which is the right kind of cop Gotham needs.
Another prediction after the reveal of Dr. Leslie Thompkin's pregnancy. Barbara Kean will have a moment of remediation. This would trigger two important outcomes, Gorden will name his daughter after her (and she will become Batgirl ... someday) and he starts believing, that even a dangerous mentally ill criminal can be healed. Another important step to explain, why Gordon will believe in the future, that Batman's crazy villains can be rescued.
It would be interesting to see, if Session 3 will be a time-skip, since if i am right, i don't see, how much development you can give Gordon. He is pretty much ready for Batman at this point.
