A big part of the problem with the Origin characters, one that DoS2 didn't have, is that their personalities are directly tied to their class. In Divinity 2, if I want to play as Fane but would rather be a heavily-armored warrior than a squishy wizard, that's no problem at all. But if I want Wynn to be a cleric of Ilmater, well... the dude's a warlock. It's fundamental to who he is.

I love playing paladins and bards in tabletop D&D. But unless Larian adds Origin characters who are paladins or bards, I'm gonna have to make a custom dude if I want to play one. Even then, what happens if the Origin character is a paladin of Bane or something because they thought that would be more interesting than the goody-two-shoes paladin of Torm I'm wanting to be? In a setting with so many aspects to every character choice, it seems kinda... selfish, maybe? Kinda selfish to tell your players, "You can pick from one of these concepts that we think are cool, or have a less fleshed-out experience so you can do something you think is cool. Nerd."