Frankly, if we got fully customizable hirelings as they are written now, I'd still be a little underwhelmed. I don't like that they are zombies. I don't need a backstory because that can be my own head canon, but making them zombies ruins them. I like the game but I still want to be able to create a custom party from scratch like I can in all the other D&D/Pathfinder games I've played. And I'd rather have ambiguous backstories for my companions than a skeleton bringing them back from the dead to serve me.