@ Scuttlebutt101
Sorry, my bad! I was already thinking of Alexius, so when you mentioned a magister, my mind leapt straight to him. Stupid of me, of course he isn't the only villainous magister we deal with. re: Champions of the Just, I recently did it for the first time, but my Cadash hasn't gotten to Skyhold yet, and I'm not sure what I'll do with Denam. I'm generally biased toward mages over Templars, but on a personal level, from what I've seen so far, I think I actually like Ser Barris more than Fiona. 
@ Gilsa
Thanks for the explanation and the link! I notice that that post from Sheryl Chee is from January. They've known about the problem for this long and still haven't patched it? Is it that difficult? I don't know anything about programming, so while the problem sounds simple, I don't know how simple it is to fix it. Or maybe they just didn't feel that enough players knew or cared to make it worth their time to fix? I'm a sad nug now. 
@ Bugsie
I know Alexius's actions were motivated by love for his son, but that just doesn't cut it for me. I don't believe that love is a catch-all excuse for anything. I think it almost makes it look worse to me, that someone who clearly knows what it is to care deeply for someone would destroy the lives of so many others with no compunction. If he loves Felix, he should be able to understand that his actions are imposing on many other people the same kind of devastating loss he's trying to avoid in his own life. What I'm basically saying is that a general sense of empathy is extremely important to me. Characters who show empathy earn my respect and those who show a distinct lack of it earn my disgust. I felt very much that Alexius knew better than to do what he did, and did it anyway. And given that he was basically trying to destroy the world as we know it, his actions don't even seem very smart. How did he think the world would end up? How could he know that Felix would still be able to live in the kind of world Corypheus sought to create? What made him sure such a world would be worth living in? I also wonder exactly what Corypheus told Alexius when he promised to save Felix. Did Alexius bother to ask any questions about how said preservation would work? In the alternate future Felix appeared to be something similar to a ghoul, and Alexius seemed to be in denial of that fact, probably because after all the horrors he'd committed, he couldn't face the fact that they had been for nothing. (I told Leliana to give Felix a clean death; it seemed the kindest option.) In the wake of all that, Alexius just looked morally bankrupt to me, and at his judgment, he stated that the only thing that mattered to him was that he'd failed to save his son, then got mouthy and told the Inquisitor that she and all her associates were all doomed anyway. Faced with justice, he basically says, "Screw you." So at the time I was not inclined to be merciful.
Erimond is a sick, horrible creep, and I'll be honest, I was itching to take his head off. But I thought the Wardens had more right to mete out justice on him than I did, so I handed him over to them. I never did hear what they did with him. I figured they'd probably kill him, and didn't care, but if they decided to conscript him instead, that's their prerogative. He could be an asset to them if he learned to behave.
I really enjoy the fact that none of Corypheus's top people actually consider him a god; they all see him as a means to their own, other ends. I can't speak for Calpernia, since I haven't met her yet, but she sounds interesting from what little I've gleaned. Samson is a horrible person, but he's fascinating. I handed him over to Cullen. And I just love sentencing Florianne to work on a farm, it feels very fitting.