The Origin system is my least favorite part of this game. It is a copout design decision that inhibits player agency. It is much easier to write permutations for, say, Wyll, a known entity with a set personality and goals, than for an unknown.
Our custom char got totally shafted for this mechanic. But who knows? Maybe Larian will eventually balance it better in this game than they did in DoS.
An actual origin system, with background choices and a prolouge (including unknown, for folks who don’t like them) for your custom char would have been so much more fun than this origin character system, imho.
After seeing DOS2 I wouldn't count on that. I still prefer my OC always. But even then, it's clear that DOS was made for Origin characters (specifically Fane), and the same thing will mostly happen here. I hope I'm wrong, but, I doubt it.