Looks like my post has started a class alignment argument. Awesome!
Anyways, I think you guys make a good point as why Solas isn't exactly Chaotic Good anymore on account of his crazy plan, and while I gave him that alignment because his personal philosophy and thoughts seemed to just seemed to scream CG to me I can totally see how he's gone darker and turned Chaotic Neutral or even True Neutral, which is an alignment I never would of thought to give him. It's just that to me Chaotic Neutral characters are pretty indifferent to helping people and value their own freedom and happiness but rarely others. Solas at the very at least wants to help restore his people, which it definitely selfish (which a lot of Chaotic characters including Good ones are) since it would involve the deaths of millions, but still isn't quite Chaotic Neutral since he's doing it help others and not necessarily himself. It's sort of the same reason why I ultimately gave Sera Chaotic Good even through she's quite selfish at times and kind of an ass. At the end of the day she wants to help people, certain people mind you, but still she has that desire to help others even when it doesn't actually profit her all the time.
But, hey, YMMV, so I can totally get way people reach a different conclusion.
Lovely topic 
Just a question: why Sebastian enemy/rivalry with Aveline?
Aveline surprisingly has something of a Blackwall thing going on in that she doesn't really like nobles that act like their above everyone else. Her banters with Sebastian are typically hostile.
I disagree with Vivienne being a rival to Dorian and vice versa since she seemed to show both respect and concern for him in Trespasser. Not attending the leaving party means nothing since she never seems to socialise; she didn't do Wicked Grace either. I reckon their relationship would be no worse than neutral.
However, I do think she would be a rival to Cole; she really wasn't happy about having him around the place and you show Cole as one of her rivals. Generally in D&D they tend to mirror one another.
True. But I'd imagine that even Vivienne would at least attend possibly last social engagement that she'd ever have with Dorian if they did have anything beyond caustic banter between one another. I see them as friendly rivals, but still definitely rivals in terms of politics and treatment.
I didn't gave Cole any Enemies/Rivals even through they typically are mirrored in D&D because Cole himself doesn't really treat or view Vivienne, or anyone else for that, as an enemy/rival of any kind.