Yeah, from what I've read from people who've read the books, she's struggled so hard to help the elves for so long, and we barely get a feather of that impression just from watching the game.
Honestly, Briala sounds like an Orlesian version of my City Elf Warden, who also spent every waking moment struggling to help her people, approached the Dalish hoping they would embrace her as a sister and help her people (while the reality didn't match the expectation, I imagine she remained on good terms with Lanaya's clan, often went to visit, and often brought the Dalish's knowledge back to her alienage) and placed her trust in helping the elves into a charismatic female human noble who became queen (Anora), only to become disillusioned, realize the person she trusted turned on her people to further her own power, then realized she would have to take her people's fate into her own hands. (I imagine the main reason my Warden Tabris traveled West to find a cure for the Calling was because she realized Ferelden human nobles would never treat her people fairly without the Hero of Ferelden around to enforce changes, and realized she needs to live longer to make sure the changes were permanent. Also, so she and Warden Alistair could live long and happy together.)
And Briala is kind of similar to Lavellan. Both want so badly to help the elves and will go to great lengths to help their people. Briala makes that off-handed insult, "Finally slumming through one of the alienages of your people, I see?" but we can't connect with or reach out to her in a meaningful way at all. I headcanoned that my Lavellan wants so badly to help elves everywhere, regardless of their cultural background (contrary to the xenophobic Dalish stereotype), and constantly feels like she's being punched in the gut when fellow elven characters accuse her not caring.
Yeah... I don't know. I get the feeling that, when writing the game, the writers kind of thought, "We already explored this in the book, so there's no need to go into too much detail here. Players will have read the book / can read the book to learn more about this." And I don't think it's right. I feel like the writers should pretend like the books were not written, and flesh out the characters and explain the conflict as though this were the first game in the series.
Just look at Loghain. The Stolen Throne goes into more detail about his past and motivations, but one can still get pretty keen insight into his past and motivations in the game without picking up the book. It's not like he makes it a secret that he lived under Orlesian occupation, suffered horrible abuse under the chevaliers, pretty much gave Maric his victory in the Ferelden Revolution, and did what he did in Origins because he legitimately believed he was saving Ferelden (the nation) from Orlesian occupation.
DAI characters? Not so much. The books can make or break your opinions on them, because without the books you learn next to nothing about them.
True, one can learn about Celene purging an alienage while she and Briala were an item without reading the book, but still... my character felt a little guilty for letting Celene die when she came to the palace specifically to protect her (and felt dirty for playing the Game to someone's fatality). If I'd known more details about how awful Celene was to Briala and her own elven subjects, I wouldn't have felt as guilty.
I also wouldn't have recruited Michal as an agent or restored his standing in the Orlesian court if I'd known his history with elves. >_<
To be honest,my favorite outcome was the one where Celene was murder-knifed.
It's not that I disliked the character,but an Orlesian ball without a good ole murder would've been a dull affair.
In all seriousness,I liked that my inquisitor played the game and won.She was the one pulling the strings of an empire something that Briala is now going to do as far as Gaspard is concerned.

Plus,intrigue and ruthless politics!