Anyways we had already a campaign missions like the Soviet Mission in YR "To The Moon" and it's remake which is called "Earthrise" that will be available in the future updates, not in version 3.3.2.
Since there is no Allies in every space missions but only Soviets and Yuri's Army which can both train Cosmonauts as an alternative infantry.
However, for my opinion , the Space Warfare mode could be a bad idea to me because it could ruin the entire mod. And also this mode will reminds me of those in StarCraft.
Perhaps that could not make any sense because it's very hard to develope for this.