It's possible that a game set in Tevinter will have a heavier qunari (and possibly even dwarf, given what Dorian says) presence than what we've seen so far... Origins gave us a little taste of everything, DA2 had a human-only protag, and Inquisition had a ton of elf lore. Descent was a nice tease for dwarves, but I do think as we learn more about Thedas-That-Was we'll see the impact on other races.
It's just a matter of hanging tight in the meantime, which is not easy.
I do hope that you're right. I mean, I was willing to give the lack of Qunari content a pass in the main game since they were added so late, but I don't understand the lack of it in Trespasser. And dwarfs just usually get shafted. It always sort of feels like DA is very human and elf-centered, so I just don't want to get my hopes up that the games will ever focus on anyone else.
I know! You would think that the parents could have taught him/her some Qunlat but then again the Qunari Inquisitor wasn't raised in Qunari lands.
Not to mention that Adaar ran with Tal-Vashoth mercenaries, and Shokrakar, at least, is confirmed to have left the Qun. You'd think they would have spoken a lot of Qunlat, talked a lot about Par Vollen, etc.