It's also quite easy to trip and fall onto a knife without any formal training, but that doesn't mean we ban knives. I'm all for training young mages well, yes... and since Connor's feat doesn't seem to be repeated by any other mage child ever, it seems to work out.
Last I checked "falling on a knife" doesn't kill the majority of a village. Falling on a rigged detonator might, and lo behold we do keep those safely locked away until they're needed.
As for Connor's feat not being repeated... well, no. That's why Meredith is so paranoid: Her sister had bad a case of abomination as well. Killed a good number of people before being put down. So no, Connor is not an isolated feat. The only reason we see so few children turning into abominations is exactly because they're send to the Circle so young.
They wouldn't be good peepholes if you could see them, could you?
True, but solid brick walls tend to be hard to drill a peephole through unnoticed.
All of them in Uldred's rebellion, plus Anders, plus all of the suicides that Anders mentions (and there are more Tranquil than those).
The worst complaint Uldred's rebels offered was "they are always watching..." and mister "I escaped from the Circle seven times and barely got more than a slap of the wrist and being send to bed without dinner" Anders is not the most credible source when it comes to the suffering of mages in Ferelden.
At least not his words, because the fact that he was allowed to escape seven times before the templars had enough of his escapades is again a sign of leniency rather than cruelty.
The Annulment was... well, either there were very few abominations or abominations are as weak as gameplay shows them to be, because the alternative is painfully illogical--also, we weren't the Hero of Ferelden yet, but a bunch of misfits barely out of Lothering. And Greagoir has been known to physically abuse pregnant women in the comics, aforementioned mind rape and summary executions aside.
The abominations completely overpowered the mages
and templars in the tower. That speaks volumes of their strength.
I see how that would be a sore spot for the Crown, after all, they were beaten by mostly farmers.
Though, I knew about Europen history just much as Russian history, to the point, my IQ tester was surprised I knew, who Queen Catharine the Great was, since I was the apparently first person too actually get that question correct...." I also learned the players mostly in history 101, but I find that stuff interesting.
To the Brits, maybe, but I can assure you a lot of other countries don't think much of it. (well, maybe a bit annoyed at how Americans keep yammering on about how its the most important thing to happen ever, but eh, every country has their pride

)
European history is so chock-full of events our books can have a tendency to fill their limited page numbers with more local history.
On the Harrowing... some way that won't involve death to the apprentice in question? Like sending two mages into the Fade, one who can take out the demon if need be? Even our most hardcore military organizations don't have death as the penalty for failing training.
If the demon thinks it doesn't have a chance then it won't rise to the bait. The entire point of the Harrowing is to bait a demon into making a genuine attempt at taking over a mage. With a senior mage present, the test is ruined before it even begins.
Perhaps, but carving out a space would be difficult too.
They're going to have to start carving out a space for themselves anyway. By not starting the thing as a war, they have a much bigger chance of avoiding the war entirely.
Entirely baseless. Certainly they were concerned about other mages--not to mention that they never attacked the Chantry, the templars attacked them, both before and after leaving the Chantry.
No, they weren't. That's exactly Vivienne's point. The mages who voted for separation did not for one moment stop to think "what will separating from the Chantry accomplish? What effect will it have on children awakening magic after we do so?" They were only concerned with their own freedom, not the future for mages as a whole.