Close to where I grew up was a town called Swedesburg, they fly the Swedish flag there to this day. Lots of Germans and Swedes. One would think Europe would change immigration law to encourage people who would naturally have some affinity or ties to the region. But that doesn't seem to be a popular idea. I think my wife and I would be able to integrate anywhere over there, northern or southern Europe, with zeal. We both speak English, Spanish, we can already communicate with Italians as a result of Spanish, and are enthusiastic about cultures and languages. I've lived in the US, France, Mexico and visited ~10 nations including Russia. My wife has visited equally as many and studied in Valencia. I've been to Finland- it has less snow than the part of the US I'm from (though my wife would probably not be thrilled).
I've always gotten the feeling Europe prefers its former African and mideast colonies to immigrate north, rather than American hordes with their money and talents (which may be more offputting to the natives than a more desperate immigrant).