We might see a situation where the Soviet Union is much more deeply enmeshed in the system of post-WW2 institutions. In OTL, the Soviets were active in the process of institution-building, but Stalin pushed his diplomats to play hardball, as he was growing increasingly suspicious that Soviet membership in these institutions would result in US domination of the SU. Eventually, this meant the Soviets did not commit to many of these initiatives.
So, with Stalin dead earlier, we might see Soviet participation in the Bretton Woods system (and thus membership of the IMF and World Bank, which would have rather large implications on how the Rouble would work as a currency and how the Soviet banking system would evolve).
And that's just one example...
fasquardon