The Soviet Union avoided turning East Europe communist, with the exception of, say, Bulgaria. Soviet troops are stationed in Poland, without interfering in the Polish political system. All these arrangements would be in exchange of a permanently divided Germany, into Saxony, Hannover, Hessen, Bavaria, Baden, Austria, and a half of Prussia.
Another half of Prussia would be rewarded to Poland, without ethinically cleansing their German population, this could keep a post war democratic/soft authoritarian Poland occupied, unable to challenge the USSR.
This way, the Cold War wouldn’t start so early. And because there is no Germany, Anglo-French hostilities would resume, leaving the Soviets alone. The Soviet Union could therefore go on exporting their revolution in China, the Arab countries and Iran with all their effort, without much alert from the west.
With more Soviet support earlier on in China, Mao wouldn’t be able to weaken the pro-Soviet faction. Therefore, a Sino-Soviet split would be avoided, and this means China’s “lost” decade (from 1959 to circa 1973) would not be.
For the Middle East, more Soviet resources may prevent the Arab countries from purging their communist elements. With the right twist, a unified Arab state may emerge from the fertile crescent.
We might end up, in the 90s and 00s, with a four-way Cold War: China, the Soviet Union, the Arab countries, and the United States.