Let's be honest. Command and Conquer: Red Alert will never be able to get a reboot, despite the success of Command and Conquer Remastered Collection. Electronic Arts had simply ruined the Command and Conquer series so much that it has been irreparably damaged.
For starters, Command and Conquer's Red Alert series was, contrary to popular belief, not really based on Cold War alternate history. Instead, it merely teaches us about the negative consequences of altering the space-time continuum. In fact, it could be possible that Dr Gregor Zelinsky was informed about the negative consequences of altering the space-time continuum by Nikola Tesla, the man who conceived the Tesla Coil that became an icon of the Red Alert storyline.
Assuming that the one who wanted to delete the tyrant who started World War 2 for the sake of a better future was not some physics genius, but rather, somebody from the Warsaw Pact, it would result in a bloodier and more brutal version of the Cold War.
MapleStory and Gunbound are two games that originated from South Korea, so it would make sense for the South Korean armed forces to draw inspiration from these games. Unfortunately, in practice, an army that draws inspiration from MapleStory and Gunbound will not be able to survive a Cold War alternate history setting where the Warsaw Pact and their allies have Tesla Coils, double-barreled tanks, airships that drop bombs that have more than half the destructive power of the MOAB, and infantrymen who can use guerrilla tactics.
Yugoslavia was a Serbian-dominated federation of Balkan states, and Nikola Tesla was born in what is now modern-day Serbia. In our timeline, Serbia fought alongside Russia against Germany for two World Wars, and during the Yugoslav era, was a staunch ally of Soviet Russia. Therefore, it makes sense for the Tesla Coil to be deployed as a weapon by the Soviets.
As far as plot twists go, Germany will be the country that betrays the Allied Nations and their allies. This betrayal will ironically anger even the German people because there are people in Germany who are currently warning us about their country being a greater threat than some other warmongering rogue dictator. This is because Germany was the country where the authors of The Communist Manifesto were born, as well as where The Communist Manifesto was first written. Even worse is that Germany smuggled a pro-communist exile out of Switzerland to foment unrest in Russia during World War 1. In our timeline, Germany is forcing the EU to implement their regulations upon the whole world that entire countries are forced to plagiarise EU regulations. Germany's attempt to enforce their will upon the earth was actually predicted by a denomination of Christianity that is currently speaking the inconvenient truth, including America's decline.
A homage to Red Alert 3, in which one conscript says "Neutrality, huh? Switzerland, please explain massive Allied military base!" will get referenced when one of the Soviet conscripts will question Japan's pacifist policy.
The Pusan Perimeter was the turning point where the tide turned in favour of NATO and its allies during the Korean Peninsula's civil war. Of course one of these Allied missions will revisit that plot of land, where the Allies and their allies must chase the Soviet forces out of the Pusan Perimeter.
A reference to Dr Gregor Zelinsky will involve a Soviet scientist either defecting to the Allies to tell the truth about altering the space-time continuum or he will tell the truth to the Soviet Commander that the laws of the space-time continuum had been violated.
Yes, Jerusalem had been totally destroyed before, as recorded in the Bible. But it was never wiped off the map despite the two cases of the city's total destruction. The Soviet Campaign will end with the Soviets seizing control of a Jerusalem that had been burnt to the ground as a result of the massive final battle. However, a remnant of the Allies will escape by a time machine, referencing potential sequel hooks. Similar to the Soviet ending of Red Alert 3, where the player becomes leader of the Soviet Union, and by extension, the entire world, the Soviet ending for the Red Alert reboot will have the player become the president of Russia, and by extension, the whole Earth.
This "lost" script, unfortunately, does not even exist. But if it did, it could be a reference to all the cut content that never got implemented in the Command and Conquer games.