Being french myself, i must admit that the game taking place in Orlais makes me worried a little bit. Not about the culture or the clothes centered mind of the inhabitants (it's obviously a nobles thing only). It's just about the accent.
Lelianna's was great, the other ones, not so much. They are just "over the top", "cliche".
To be honest, there is, in fact, french people who talks like that. But they are those who don't really speaks english, or just really bad. Those who don't practice, those who don't hear english every days. The other ones, even if they don't have an accent as good as Lelianna's, are just "correct". And "correct" is NOT in any means Isolde accent (which is even worse knowing she is suppposed to have lived in Ferelden since years and still have this awfull accent)...
So yeah... I may be a little worried about the game taking place in Orlais.
Other option, every one in Orlais (player included) just speaks plain french with english subtitles... THAT would be very fun i'd say...

(and even more fun on the forums)