I don't get it.
Why does anyone think that Wanda and Pietro didn't "look eastern european" in the comics?
That's how eastern europeans look in reality:
Anna Kournikova (Russian)
Vladimir Putin (Russian)
Dariusz Michalczewsiki (Polish)
Sebastian Stan (born in Romania)
So, there are many, many people in Eastern Europe that don't look any different than the people in Central or Western Europe...