I'd be more interested in Origins if they played like, in some way, the Witcher plays, just less. Yeah, have the player decide some major things, but otherwise let the characters act as they would and watch their stories unfold.
Ok, that would be super cool for me. Right now my only problem with playing origins is the fact I won't be able to enjoy their dialogues, expressions and stuff as much as I do when they are my companions.
I hope the issue you're talking about will be at least partially solved thanks to origins' special lines we could see in Swen's gameplay presentation.