Even though their names didn't actually change in any of the dialogue, I liked being able to rename my companions in Avadon. It seems like their names are set in stone for Avadon 2 though, which makes me a little sad. I'm guessing the renaming function was meant to only be available for the main character from the beginning, and that's why it's been removed, but I think it was fun to have and would like to have it back if possible!
maybe even with the changed names showing up in dialogue while i am making wishes anyway