Dame, what an interesting POV
If you count up the total of Naz's screen time - and split it into speaking and non-speaking - I wonder how it compares to Stone's screen time? I don't think he was the whole show at all.
For me the attraction here was very much the case and the wheels of justice and the little things that are so important- like watching Andrea's body language on camera and thinking "wait a minute".... the way legal support is allocated, plea bargains, all manner of interesting things.
the oddity of Ms Weisz effectively telling the classmate who bought drugs off Naz that he (the mate) was an idiot - I realise this was also to show Naz as a dealer but it was also very insulting to the witness imo.
I do think there is a fundamental set up when you are supposed to believe a character is "nice" - just as a pp said, it's set up like that so much that I wondered if the last episode would prove Naz did it. If a character is shown as "good" in the first episode, my first reaction is to wonder what they've done wrong 
I do realise there is an element of misandry for me - I say "liked" Andrea and she probably had about 7 minutes of screen time so I have no basis for saying that other than instinct and I guess people who liked Naz liked him on instinct.
"The whole point was to empathise with this poor boy who had made a dreadful mistake and got caught up in a string of life changing events."
I actually think the writing was set so that the point was to get people debating about this. I can't see why he was a "poor" boy. What was his mistake? I can forgive stealing a cab, yes, but then running from the scene of the crime like, not checking for a pulse - no. And a "mistake" is like not registering the "no left turn" sign. To me the drug dealing and the pinching your father's cab because you thought there'd be a type of girl at this party - that's just deciding what you can get away with in pursuit of a good time! he is not "poor" or "vulnerable" etc - but then again, I think he was meant to be 22, yes? I can't see a 22 year old as anything other than an adult so the good boy narrative jarred with me anyway, he's not 15.
he was just an ordinary guy really - perhaps a bit mean and nasty depending on how you view the drug dealing. I'm a bit unsure of my own view on dealing.
This whole "set him up as a good boy" then takes us into territory of "courtroom image" - which is fascinating and another reason to watch.
depressing in real life though but that's a whole other thread.
but hey, as long as the cat is happy, I'm happy.
Does Chandra get struck off for what she has done? The judge didn't go for mistrial so I'm guessing not. So, series 2 could be Chandra and Jack teaming up on cases. That could be interesting. No one will hire Chandra so she will have to go to Jack's level of work.