....erm...
Let's not get into compare and contrasting Tevinter to southern nations here. I'm sure you'll find that nearly everyone here can and will find something to complain about Orlais, Ferelden, its members, and so on. There are still heated debated on whether Loghain was right to retreat at Ostagar or not. And like those debates, I'm beginning to see a tendency show up in this thread.
Absence of an argument does not necessitate support of it.
To clarify, person x says Loghain was right to quit the field at Ostagar and that Cailan wasn't worth sacrificing the whole army for in a charge that may not even have succeeded considering the beacon was so late and the darkspawn were pouring out of the wilds, so person x supports the decision to retreat. Person y gets into a huge tangent about selling elves into slavery, sending a blood mage to poison a rival noble. Person x agrees that such actions were deplorable but Ostagar itself is justifiable. Person Y then accuses person X of supporting all of Loghain's decisions, whether outright or through snide asides, because X isn't bringing them up. X says that he/she doesn't, but because Loghain is to blame for a lot, it's not right to blame him for all, but Y is too far gone now in Loghain hate,
baddy beem, baddy boom, you have the rise of circular arguments that go nowhere.
Fiona was an idiot for trusting Alexius. She would've had far more luck appealing to Teagan or Alistair, and offering services to the crown. Alistair/Anora would've helped them. Trusting a Tevinter Magister is not the smartest thing to do, especially when it comes to servitude, the vints attitude towards it, regardless of deals made at the time, will still have the mages treated as property and no value. Anyone who knows anything about Tevinter culture and how they approach slavery can predict where it was going.
Yes, Fiona may have got some promises out of Alexius to keep the children and such out of the legion, but by giving him all the power in the relationship, she also gave him all power to renege on his deals. She forfeited any power she had to enforce the stipulations she got out of him, which is one thing you do not want to give up whenever you deal with politicians, and that's exactly what a magister is.
But even despite her idiocy, I still think her decision is more justifiable than Lord Seeker Lucius's, the real one we meet in Cassandra's personal quest, even if she doesn't regret it.
I helped the mages because I wanted to get rid of a foreign power in the heart of Ferelden, but I conscripted their butts because Fiona at the very least proved that the mages and their leaders were nowhere near ready to handle the responsibilities that come with autonomy.
I played a little bit on a new Inquisitor that I'm roleplaying as being staunchly pro-mage-freedom (human mage), and I personally liked a bit of dialogue Cassandra has with a random mage.
Mage: We can't work in these conditions! We require better quarters, more supplies-
Cassandra: You are here as allies of the Inquisition, you are not our wards. Get them yourself.
Mage: But how are we supposed to handle-
Cassandra: Deal with it.
*to Inquisitor*
Cassandra: The mages are here as our allies, equals. They need to get used to what that means.
Golden bit of dialogue there.