The mages aren't much more trustworthy in my books. If both sides are to endlessly air their grievances all the time, we might as well resume the War until everyone is dead, but that doesn't help anybody now does it?
Besides, the vast majority of the more corrupt elements of the Templars presumably died via an Inquisitor to the face over the course of the story, especially if they went to Therinfall redoubt. I suspect the remainder are less likely to be the assholes that made the rebellion what it was by their transgressions.
By that logic, so did all the "dangerous" mages.
Except Vivienne specifically says she is not exceptional in being able to leave. Montsimmard may be one of the more permissive Circles, of course. But such permission does happen.
Interestingly, Allying with the Templars and VIvienne becoming Divine seems to make such relations better. The mages in teh reformed Circle are given more freedoms and responsibilities, and Vivienne (a mage) maintains strong oversight over the reformed Templars.
The trouble with that is that we know it's not the case. In Ferelden and Orlais, it was apparently a big deal to be let out for fresh air or shopping.
And let's just pause to recall that we're talking about how generous it is that the templars allow an entire group of people occasional freedom of movement and completely on their own (ie, the templars') terms. Again, I guess mages should be grateful that on a good day they might be treated like human beings?