I think this is a topic that shouldn't taken lightly since P:E will most likely focus a lot on dialogs with NPC's.
I consider decent character expressions a very important part of those dialog interactions.
At least important NPC's should have different expressions, either via different character portraits or 3D heads.
Though 3D heads only work if they are good which was NOT the case in NWN2 but in Dragon Age (especially with beauty mod) or Vampire Bloodlines.
I also wonder who came up with this nonesense that different expressions are an JRPG thing.
Fallout had fullscreen faces ages ago and most games with 3D engines have it those days.
They should at least make portraits with different expressions for important characters.
The "over the top" expressions are kind of jRPG. There are jRPG's that have a mix of Strong Big Emotions/Expressions and subtle expressions, in my Theater Class we used to call this something you do on Theater, you exaggerate your motions to create an illusion for the viewer, but Theater is live action which is way different than a movie or a game, there is no direct contact/direct feedback in a video game from the actor. We used Big Expressions and Exaggerated Movements to catch the crowd's attention and get them into the show we were moving our mouths when speaking, articulating more clearly, a casual hand motion became a big hand wave instead etc. etc.
Some jRPG's go with the theatrics (Big motions) and it works, for them.. would it work with P:E? No, but if it would be kept realistic, Edair closes his eyes thoughtfully then he could express that authentically imo.
Anyways, the whole idea with this thread, and my own suggestion, is to give a little more life to the portraits which in turn will give more life to the characters. I have no doubt about it.