I have the same concerns as Uncle Lester's spoiler.
I want scowling Shadowheart back and I want to her break off the relationship with the MC only to start it again. Just like the Viconia romance. This should be part of her redemption -- Shar is goddess of loss and sorrow. New hope and new beginnings should invoke a crisis of faith.
While I normally agree with Kanisatha I did like Durance exactly because he was going through a crisis of faith. I wanted to help him understand that he was serving a goddess that used him like a tool to be discarded when he was no longer fit for purpose. Durance never became 'good' because 'good' doesn't exist in PoE but I enjoyed bringing him to the point that he would denounce Magran.
So far I like old Shadowheart and current Wyll the best.
Sorry, it seems Larian's focus testing has shown that the majority of players do not enjoy companions talking back to them, and they will now have no choice but to adore the player from the moment they meet.