While I remember it, only Astarion gets more custom interactions with the Dark Urge, as the same writer created both Astarion and Dark Urge and gave them extra content.
Outside of that, nobody else gets anything, which is a massive missed opportunity. Hell, after playing good urge here are some ideas:
-Make way more saving throws, so you don't commit to urges, basically all the choices where Dark urge calls, should require saving throws. So, not all situations, but way harder than it is right now.
-Each time you resist the urge, it becomes harder and harder to resist, making it tempting to fall to urge at certain moments. It would really come into play in Act 2. And was implied early on.
-Make falling into urge rewarding, I wrote about it in suggestions.
-Rework the ending, so nobody is forced to become mind flayer, if you refuse the Emperor. In fact, here is an idea, depending on your choices and how much you resisted the urge:
A) Fell into darkness: You take over the Absolute and slaughter everyone, your loved one included.
B) Neutral: you fell too many times, allowing you to destroy the brain, but Bhaal keeps destroying your mind, forcing you to kill yourself, so that you can't hurt anyone else.
C) Good: you resisted the urge enough times, you are still afflicted with it, it will never go away, but unless you let it, you can control it, living a semblance of normal life.
-Make your companions be terrified of your actions, if you commit to them and if you resist them, have them provide moral and physical support and way more dialogue + reactivity.
You get the idea. Playing as either Karlach or Dark Urge is a bit lacklustre as they have got less content than Shadowheart or Laezel. Wyll after rework suffers from it too.
