I live among foreigners, and the only ones that I've met that actually like their home country are rich ones from totalitarian regimes who somehow benefit from the regime. And as far as I can tell, public opinion of a regime among expats is strongly tied in both directions to how that regime effects them and their families financially, though even well off people such as myself, who have chosen to move away, often find it in their hearts to hate their home country.
The rich Saudis who come to Prague to study all thing Saudi Arabia is heaven on earth. The Russian who's family lost everything in 1998 [1] think that Putin should be hung from a lamp post with his own intestines.
I think that there is basically no knowledge to be gained from talking to expats about their home countries. After-all 75% of Turks in Belgium voted for totalitarian dictatorship at home [2].
[1] https://economics.rabobank.com/publications/2013/september/t... [2] https://en.wikipedia.org/wiki/Turkish_constitutional_referen...