Just a few thoughts:
6. I just question the essentialism that claims that a Jewish state elsewhere could never have worked because the Jews have some sort of mystical emotional tie to Israel blah blah blah. Jews have always been adaptable people: if Stalin pressured the Jews of Eastern Europe to move to an ethnically cleansed Prussia, I have no doubt they would have made a working country out of it, and within a couple generations become quite fond of it.
Bruce
Stalin's OTL Autonomous Jewish province in Siberia wasn't particularly successful:
http://en.wikipedia.org/wiki/Jewish_Autonomous_Oblast
Also, Stalin was quite capricious....