Your basiclay saying the system is safe from abuse which someone has said it has been abused before Kirkwall. The system as it is now is ripe with abuses that can be inflicted upon a given circle by a knight comander like the one in 9:06 towers.
No, I am saying that when it runs optimally, the Circle is a safe and comfortable haven where mages can thrive. If there is an issue, it means the Templars or mages in question need to be dealt with. Getting rid of the Circle entirely does not solve such problems, it just means that those problems move to the outside world and get even more out of hand.
The police have committed abuses and sometimes brutalize people. Should we just get rid of police-departments everywhere??
No, you deal with the bad cops individually. You do not eliminate them altogether.
And the RoA is a reasonable last-resort for an outbreak of possession, blood-magic, or other very real problems. However, the most worthwhile thing about the RoA is that it makes mages realize there is a greater price for doing something stupid with their magic (consorting with demons, practicing blood-magic, or what have you) than their own lives -- it will also cost them the lives of those closest to them. That reality is true even if the RoA were banned.
So he has nothing to say about the Circle before melding with Justice, despite going on and on about how the templars want to imprison mages just for being alive, about how the smell of pie means freedom to him, about how he wants to destroy his phylactery?
Is this a man who thinks the Chantry and Circle system is peachy?
You folks really need to read my posts slowly, and carefully, before responding! I am not some amateur at this.
I said, "speaking vitriol and getting violent toward." Anders may not have been a fan before Justice, but he was not a raving zealot about it. Nothing he said in DA:A was really what I would call "vitriol," and he was not resorting to violence against it either until after he was abominated by "Justice"-nonsense, and that is not on the Chantry. It was his own doing. Gotta love the accountability, though. 
And he is free to his opinion, but not everyone shares it. Wynne liked that Circle. So did Finn. Hell, even the HoF did if you RP them that way. Why the cherry-picking?
So, I guess they rebelled because...? The blood mage who asks you to spare her life talks about how the templars were always watching.
So what? If you are American, the Feds are always watching you. Some folks complain. Others do not care. It is not something everyone can all agree is a good or bad thing.
**edit** And the mages rebelled because of a self-fulfilling prophecy. Anders decried how terrible the Circle was, so he blew up a Chantry and led some mages to rise up. The Templars responded by tightening restrictions, which drove mages to rebel. Before that, though, Vivienne indicates that the Circles were generally lenient towards mages (<-- not to be confused with mage apprentices), and that Kirkwall was largely the exception/not the rule. Let me reiterate: the Circle only got bad because Mr. AHH THE CIRCLE IS SO BAD!! made it that way.
The mages? Are they a hivemind now?
Whatchu talkin' 'bout, Willis??