Which could have been the later impact if the Communist leaders would have opt for the establishment of just one centralized Sovietic Republic instead of a federation of SSR?
Would it be possible the break-up of 1990-91 if instead the OTL SSR of Latvia, Lithuania etc. there would had been the oblast of Vilnius, the oblast of Kaunas, the oblast of Riga...with little-to-none autonomy?
Would this different philosophy of organization (more centralizing) might have lead to incorporate further territory after 1945 (new oblasts taken from Poland, maybe a Berlin oblast?)?