"Stalin dynasty" is a false and offensive term coined by the reactionary western regimes, jealous of the economical and social progress of the Warsaw Pact states. Contrary to the so-called 'dynasties', still ruling in a few backwarded places, leadership of the Soviet state ruled, rules and will rule with the support of the citizens. Please, don't use this term again. The same goes for "red tsarina". Geez, do you know how many people died due to the cruelty of royals?
Anyway, it's hard to imagine Soviet Union without the blessed influence of comrades Stalin and Kosygin. Who would take the position of the leader? Maybe Brezhnev? Without the quick steps taken by the comrade Stalin against this traitor, he could get enough influence to gain a high position and damage the Union. It wouldn't stop the immortal idea of communism, of course, but it could slow down our countries.