The new border would have crippled the Finnish defence system in the Karelian isthmus and as well the USSR would have gotten a position ( in Hanko ) close to our Capital Helsinki. The new land in exchange would have been almost totally unpopulated "desert" and Stalin could have as well promised the whole of Siberia as well. Would not have changed a thing. In fact Finland could have invited the Red Army to Finland if they had accepted Stalin´s exchange program. That was just a game to make it look righteous in the eyes of the world. I think the fact that Germany and the USSR had given each other priorities on certain countries with Ribbentrop Molotov pact proves this solidly.

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