57% of those polled would prefer all that, today. Source: http://kommersant.ru/doc/2243079
http://en.wikipedia.org/wiki/Robert_Ludvigovich_Bartini
http://en.wikipedia.org/wiki/Sharashka
Be careful what you wish for.
The reality is not as bleak as what the western propaganda made USSR out to be while it was out to destroy the only alternative political system on the same planet.
And what is the ratio? For example, try calculating this ratio for aircraft designers of the period: imprisoned_designers / free_designers. I don't think the result would be pretty.
I was interested enough to make (completely unscientific) assessment of what happened to some of the emigrants to USSR.
I've looked through all 8 Finnish emigrants listed in Wikipedia category [1]. The result isn't pretty: 3 executed during Great Purge, 1 commited suicide, 1 killed during civil war, 1 "lucky" to die just before Great Purge. The rest 2 were politicians (one of which was very high ranking). No scientists or engineers or technicians.
And here is the same assessment of all 7 American emigrants listed in Wikipedia category [2]: 3 spies; 1 scientist (Arnold Lokshin); 1 composer (Karl Rautio); 1 short-term technician, not allowed to go back to US, Gulag prisoner (Alexander Dolgun); 1 car toolmaker, not allowed to go back to US for 44 years (Robert Robinson).
Ignoring spies, we've got 2 miserable fates, and 2 good fates. So your ratio for US emigrants is 2/2. And those two are good mostly because of political reasons: the composer of Anthem of the Karelo-Finnish Soviet Socialist Republic; and asylum seeking scientist.
Do you still want to move to (hypothetically restored) USSR?
[1]: http://en.wikipedia.org/wiki/Category:Finnish_emigrants_to_t...
[2]: http://en.wikipedia.org/wiki/Category:American_emigrants_to_...
You didn't mention what kind of USSR would you like to be restored. Of course, there were different periods in Soviet history, with various rate and cruelty of persecutions. To stress my point I chose one of the most hideous periods. But unfair persecutions were always there.
This statement is so generic, that it's very hard to argue about it. "World at large", "directly related" - what do mean by those exactly?
Pre-Gorbachev era was certainly safer to live in than Stalin era. But I would argue that "cruelty" was actually one the pillars of the Soviet system. Totalitarian system couldn't survive without the excessive use of force. That's why it's called "totalitarian". Less cruelty leads to less control, and finally leads to collapse of the system. Foreign intervention had very little to do with the collapse of USSR.