I think you both have valid points. Though, personally, I doubt the Ukrainians and Poles would habe issues that, say, Kosovo Albanians and Serbs would have, were they to officially reunite.
My concern as a Pole in their situation would be having 10 million new people while my own population is only roughly 35 million.
Though Ukrainians would surely accept the great living conditions, there would still be separatist ideology and, on the other hand, more people from the actual Ukrainian state and newly formed Russian part would want to join Poland too.
That said, I have no idea how badly Poland wants that land back and to what extent they'd be willing to accept some of the potential negative consequences of a polish expansion.
My concern as a Pole in their situation would be having 10 million new people while my own population is only roughly 35 million.
Though Ukrainians would surely accept the great living conditions, there would still be separatist ideology and, on the other hand, more people from the actual Ukrainian state and newly formed Russian part would want to join Poland too.
That said, I have no idea how badly Poland wants that land back and to what extent they'd be willing to accept some of the potential negative consequences of a polish expansion.