I defintely want the custom PC to have more to their story than they currently do. I've headcanoned a whole background for my PC but I know that doesn't come easy to everyone nor should headcanon be the only tool available for making you feel like you're playing a fleshed out character. I for one really do not like the idea that every character around you has this rich backstory and you're left as an undefined blank whose background is the bare minimum implied by your race and class. Even having a conversation like in PoE1(which I loved tha they let you do) would go a great distance to fixing the problem. It's why I'm honestly low key resentful of the origin character concept; it just feels unsatisfying to think that your character won't end up having their own story beyond the plot of the game yet you have at minimum five other options that will let you explore their own personal quests AND the story of the game.