Burning Questions from Spring Finale of PLL "A is for Answers"

The Pretty Little Liars spring finale answered some questions, but also brought up a whole bunch of new ones.

What we learned:

–    Ali was the one who pushed Ian off the bell tower, but she didn’t kill him.  Ali’s been trying to protect her friends from “A”.

–    Ali pulled Hanna out of the lodge fire, but someone else pulled the other girls out

–    Noel has been helping Ali hide because he has secrets of his own

–    Mona was obsessed with Ali before her disappearance and Mona manipulated Ali into disappearing

–    Ali’s mom knows who tried to kill her

–    Ezra knows who “A” is

New Questions:

–    Who tried to kill Ali?  Ali’s mom has been protecting whoever it was, so it would make sense that it is someone in Ali’s family.  Who else would Ms. DiLaurentis be willing to cover for?  If it wasn’t someone she loved or feared, then she would have called the police instead of burying Ali’s still breathing body.  In “She’s Come Undone”, we see in Ezra’s notes that he considers Jason a suspect.  And at the end of “A is for Answers”, Ezra says that he knows who “A” is.  Of course, it could also be someone that Ms. DiLaurentis was afraid of and she was too scared to tell the truth.  And what was up with that cryptic conversation with Mr. Hastings at the police station?

–    Is Ezra dead?  He’s been trying to make up his wrongdoing in order to win Aria back and he got shot trying to protect the girls, so let’s hope that Aria and Ezra reunite in season five.

–    Who killed the blonde in Ali’s grave and why does Melissa know who did it?  Since she never talked to the police, is she protecting a murderer too?

Any thoughts or theories?