Calpernia: From Corypheus to the DA 4 Party?

Would deffo like to see more of her, we know so little yet I feel there's a strong story there, something that can come to surface through dialogue back at base, plus she wants to reform Tervinter & if that's where the game really is set, it'd make sense to have her.

She's a nasty, nasty woman!

Hm. Now I'm interested. 

Thought I was missing something; could never figure out why people like her so much. 

As I said before, she was willingly responsible for the terrible fates of thousands if not tens of thousands of innocent people. That is absolutely a monster and definitely not a good person at heart. 
Except she wasn't misguided by Corypheus. She knew exactly what he wanted and supported him willingly and unconditionally. The only part she was misguided about was his plans for her, and it really speaks a lot about her when the only reason she turns away from him is because of herself. Not anyone else, they can all be screwed over for the goal, but no not her.
Except her actions does show that she is exactly like that. In her mind, when they succeeded who would be in a powerful position: her. 

If she is going to be as impactful as you want her to be, I doubt she would e optional. She'd be mandatory and we couldn't do anything about it. Even if she is optional, that is still a wasted character and romance slot that could have been used for someone who isn't among the worst characters in the franchise. 

And what of the innocent people that the Venatori and Red Templars killed, turned into monstrosities, or enslaved(so much for her being against it)? Oh right, they don't matter. It's all for the cause. You know what people who think that way are often called? Monsters. 

I absolutely can. First, history and the people in it are judged all the time to the point it is multiple common sayings. Second, it's not our medieval history. Third, it is only medieval in some aspects while other aspects are not, for example there is a lot of Renaissance in there and some aspects even matching or surpassing our time period. 

Every single one? Are you sure? I seem to recall on more than one occasion people in those positions who weren't monsters. 
Not surprised you are defending Calpernia though. However I bet if she wasn't a mage you wouldn't.