This is what I would have said about my own perespective but I likely wouldn't have expressed it as well.
The freedom of choice in handing any given situation from psychotic to sophisticated is great. The companions I've spent time with are unique in my experience and whilst I would like more interactions with them and more story about them the writers and actors do an incredible job bringing them to life.
To me the origin characters really carry the story and the character writers and voice actors really deserve a lot of the credit for the awards. For me they managed to create the illusion that my character was as much a part of their story as they were part of mine. There are always areas where you could have asked for more in terms of interaction and reactivity. I tend to fill in the blanks with my own headcanon, so I am not too bothered about things that are missing.
Their aim with everything for act 3 was perhaps a bit too ambitious and they couldn�t really pull everything off, but I�d rather they aimed for the stars and came up somewhat short than not having that ambition. I got pretty much everything I could ask for in a story-driven crpg with freedom to play any character I want and explore the story and world in any way I want.