I assume NO-companions are just as well made as O-companions. The main differences, as I see it, is that the former have less content because they're recruited later, whereas the latter are more or less available from the start. And of course they also have more reactivity since theoretically they can be the main character and thus needs it. I don't see why the NOs can't/won't have quest lines or reactivity of their own just because there's less of it.
Interestingly, Sven said in an interview that the way he recommends playing the game is non-origin (and not Dark Urge) so you can see the origins in third person. Then on a replay, you can see what they were thinking at various beats along the story path (or note the difference between normal and depraved playthrough if you opt for Dark Urge on a replay).
i think totoro is right.
but everyone seems a bit misunderstand non-origin meaning here. our customized player character -- tav, is a non-origin character, and is the core among of the origin characcters.
just one point that tav isn't the third person perspective , actually tav is the first-person perspective.
and the views of the origin characters are just replay, via legend npcs' views to revisit bg3.
