Two thing you should know. One is that even when region-exclusive Pokemon could be hatched from eggs, it was impossible to hatch one from another country, only your own. For example, if you live in America, you could hatch Tauros, but not Mr. Mime, Fafetch'd, or Kangaskhan. So even of you could still hatch the region-exclusives, you wouldn't be able to get ones from other countries. The second thing you should know is that recent statements from Niantic have them saying that trading would not be over the internet with anyone around the word like the GTS, but would instead be local. This means you won't be able to trade for the regionals unless you know someone who comes from/has visited any of the other regions.
welp.... that is quite upsetting also..... Hopefully one day I will get my region lock at least.... le sigh