I am Asian, yet my preference for my PC is usually "European". That's probably because I have the medieval-European fantasy ideal stuck in my head. Also, the CC sucks for doing anything Asian-esque (because it wasn't designed to do so).
I'm a little at odds for adding "Asians" in Thedas. I wouldn't mind being representative, but I also don't want the world to be changed simply for equality. There are plenty of other ethnicities we could add in the game if we went along this route. What's worse is putting the token POC in a game just cuz and making it stand out like a sore thumb. So, it's good to see black and Latino/a people in the game throughout (if Josephine and Vivienne were in the game alone that would be really weird). Although, I believe that the addition of ethnicities are there simply as a reflection of what we see in entertainment today. Asians are still super rare in Western entertainment, despite being a fairly large population in the West. There is usually the token black and Latino/a in any single piece of medium. Asians not so much, yet (or if they are, usually stereotyped). So, DAI matches that. If the trend in more Asians in entertainment continue their rise, I would imagine DA4 follows suit, matching pop cultural tastes.
In the DA world, which looks medieval-esque, and other than the Inquisitor and his/her band who seem to make it to all 4 corners of Thedas, people probably don't travel much. So, Orlesians look mostly Orlesian, Fereldens look mostly Ferelden. So, French-esque and Brit-esque. That's not to say there can't be POC in these nations. But I think they either have to be common enough in the world to not look like an outlier (or, if they are outliers, there should be an explanation) and not just be put there for sake of equality. So yeah, if it makes sense with the lore, sure there could be an Asian-looking nation in Thedas or perhaps a particular phenotype that exists in Thedas but not representative of a nation. As long as it makes sense and not put there as a token equality thing. And not stereotyped. If I see any Asians in Thedas with the stereotypical accent or being a martial-arts master, I will facepalm.
I did not play Jade Empire so don't have a clue what the characters looked like there, but for example, if that world is supposedly Asian and 99.9% of people there look Asian, I would not want a European dude slapped in there just for equality. If it made sense in the game, sure. If the lore indicates a world is multiracial, then so be it. As long as it makes sense and is consistent.
Of course, we're all looking at the game through a colored lens so maybe we really should stop looking at the game in terms of RL ethnicities. :-P I dunno, hard to decide!