Just some random thoughts of mine...
First, I'm glad he was charged. I think we all feel like the charges are not punitive enough, but I understand the legal reasons for the charge. It was an accident. There was certainly plenty of negligence leading up to the accident, but there was not criminal intent.
Second, I don't actually expect Alec to spend a day in jail from these charges. Either they will be dropped, or he will plea deal down to nothing. It's not right (he should spend time in jail), but we live in a world where social standing and money gets you out of repercussions of your actions.
Third, I don't think Alec really accepts any blame for his role in the accident. I realize he can't admit or even hint at accepting any blame until the legal case is settled, but what little I have seen him talk about the accident leads me to believe this. Don't forget his role in this is much deeper than just being the person that pulled the trigger. He was the Producer of the film which means he was responsible for the production of the movie which includes the hiring of the armorer and other involved, as well as procedures on set. The entire movie production was already a shit show prior to the accident. There where at least two other accidental firearm discharges on set and at least 6 people had walked off the set due to safety issues - all prior to the accident. The fact that Alec didn't address any of these concerns in his role as Producer should be enough to find him guilty of manslaughter regardless of who pulled the trigger. Alex has done a great job in the media blaming others for handing him a loaded weapon, but the fact is that the "issues" that allowed this accident to happen in the first place were occurring long before the actual accident and known to the entire crew and nothing was done to correct the safety issues. That's 100% on Alec Baldwin as Producer even more than the fact that he was the person that actually pulled the trigger.
Personally I hope Alec Baldwin get the full sentence, spends time in jail, never works in Hollywood again, and is sued into bankruptcy by the victims of the accident due to his extreme negligence as the Producer of the film. There were about 100 different times that Alec could have prevented this tragedy (including his role as the person who pulled the trigger) and he failed at every step.
EDIT - corrected my misspelling of Alec's name.....