Why the Characters of Mass Effect Andromeda are well written.

Mass Effect Andromeda is a curious case when it comes to me and its characters.  During my first PT I wasn't really sure about them, especially the secondary crew.  It seemed for all the effort that BioWare put in to the secondary crew in ME 3 and Inquisition, the Tempest's crew got lost in the background.  For my second PT got to know them better and felt this was largely untrue, and by the third PT I grew to know Peebee and Liam, and while I do not like them as people per se, I knew them to be good characters.  With flaws and foibles.  This settled down Andromeda's cast as my third favorite in a BioWare game.  

As far as characters are concerned, as some may know, I am big into arcs in general.  Arcs are, generally speaking, states of change, consistantly going from one state to another different state.  And, for characters, there are generally three types of arcs they can go through: A change arc (either positive or negative) an arc of knowledge (the character usually finds out more about themselves, thus the audience, and thus we can grow to have sympathy about them), or an arc of increasing responsibility (see Wrex from the MET).  

And I generally am not talking about Andromeda's villains, I consider that a seperate issue, one which I have already addressed.  

Now Andromeda's characters all go through change arcs, they all grow as people throughout the course of the narrative.  Characters for an arc and just their general place in the story have Goals, motivations, flaws.  This gives a character something to work for, the reasons they want to work towards that something, and flaws which prevent them from getting there.  Now, one of these flaws can be a Big Lie (as outlined by this book here, amongst other sources), or something they believe about themselves, or that they need, that is preventing them from reaching their true potential in any given arc.  

Lets go through them:  
Drack:  Believes he is useless for a new Krogan society, he does not have anything to contribute.  
Jaal: Believes he must have a promotion within the resistance to find fullfillment and belonging. 
Cora: Believes that she has to rely on others for her own purpose.  
Vetra: Believes her sister is not old enough, or capable enough to understand her works, she wants to protect her from growing up to fast like she did.  
Peebee: Believes that it is easier to keep people at a distance then let them in close because of a betryal of a close friend.  
Liam: Believes that since none of their objectives in the Andromeda Galaxy has worked out, he has to force everything to happen.  

Even some of the secondary cast has a similar arc.  
Gil & Kallo: both believe that theirs is the only way in dealing with problems from the Tempest.
And I'm not exactly sure of the lie of either Lexi or Suvi, not sure Suvi even has one, but I suspect Lexi does so...help?  

And the rest of the cast does not really need one.  SAM is an AI so would not be prone to self delusion (though he does undergo a knowledge arc), as for the rest?  They are too insignificant, too old, too experienced, and too set in their ways to really go under a change.  Tann will always be Tann.  


So what are your thoughts? Something i missed? Plain disagree? Any thoughts on similar OT character arcs? (I may actually play the OT again with this in mind to see if any of the OT characters enjoy their own 'Big Lie' arcs)