"the USSR was brought down in the 1990s mostly due the actions of the West." That's not really true, the Soviet people wanted a change and their economy was overburdened by an excessive military (by their own choice) and by bureaucracy, corruption and general waste in other stuff.

Maybe a few 'reformers' that got their way into power, but most people didn't want things to change so rapidly. From bad, into an absolute nightmare they became, in the decades afterwards.

They brought out the T-34 and so forth rather quickly, so they had the capable people do it. I don't know why they didn't, if their engineers and designers were in the gulag or something, or if they simply wasted time in useless stuff like building 10 thousand shitty planes...

Needed more time and resources, before they can handle the Axis alone, I thought that was straightforward?

I guess this is where we forget that USSR started out as an agrarian country, who didn't have enough good machinery to build the planes they needed to begin with. And Germany was/is the industrial heart of Europe?

Yes, partially because he enabled them to be able to do it.

Avoiding the whole appeasement by the Western Allies?

So you'd rather have Stalin completely ignored Hitler's invasion of Poland, and then when Hitler invaded the USSR, they'd be able to start the invasion so much closer to Moscow?

Besides, the USSR (and world communism in general) had the same goal to cause a revolution to destroy Western society as it was/is, so I don't see how that's unfair.

And make it better afterward, being the key point!