Hi, I'm new...sort of...(I've lurked on this site for years)...signed up to comment on this case.
I think it's entirely possible that emotional states will have a great deal to do with this case.
EN has several things that, if allowed to be introduced, could have a huge impact on how much sympathy he garners with a jury.
He is younger than either of the Meyers by at least five years...he's barely an adult - and he looks it.
He has the skull fracture, child abuse, suicide of a parent, "growth" issues, a stint in a "behavioral school" that has been accused of abuse, alleged bullying which was supposedly enough to scare him into getting a legal weapon to protect himself, reported conversations PRIOR to this event where he states that people have threatened him and his family/pets...all before any of the events of this particular evening.
He was not driving the vehicle (and so far there is no proof he was giving directions - do panicked people who are in fear for their lives pay attention to whether or not the driver is following directions/going the right way - or do they focus on the people who are out to get them), he allegedly did not have his gun loaded prior to feeling as though he were being followed by an armed person, it is possible there was a wrong turn involved which placed him in a position of feeling as though he was driven into a dangerous corner (cul-de-sac) with little or no protection from the people he thought were trying to hurt him.
He is small, young, and has had a difficult childhood. It is easy for me to think that there are people who will find him sympathetic and feel that he was defending himself from older, bigger, more aggressive people and was not in a pre-meditated frame of mind without irrefutable proof - especially since we do not definitively know who fired first at the cul-de-sac.
He is "alleged" to have sold drugs - just like TM has been "alleged" to use them. Neither of these things have been proven so far and I wouldn't put any stock in, or penalize a person for, alleged activities until I had something more than hearsay from random neighborhood people. JMHO.