I had hoped not to be forced to play a premade char just to get some background and personality. Especially as I don't much like the companions aka origin chars.
It would have been nice to have a couple of available backgroundstories of your created char that actually matter in the game. Even MMOs like GW2 managed to get you some personal quests based on your background.
The whole point of a custom character is that you make up your own background and personality. 😊 But yes I agree it would be really nice if Larian would add dialogue options and a sidequest or two that relate to the Background you select in the character creator.
However an argument can be made that forcing ANY events based on preselected backgrounds/personality limits a persons role-playing options. Someone might pick the Noble background but what Larian does with that might conflict with what the player was imagining.