dogs of war DLC, spy dogs DLC, salty sea dogs DLC...
jokes aside an operation unthinkable DLC, that adds a 1946 bookmark. if im not mistaken they are currently planning on releasing with only 2 bookmarks. i think this is a good idea given the state of alternative bookmarks in PDX games, but i think releasing a bookmark alongside dlc might work well. less of a eu4 bookmark(useless) and more of a ck2 bookmark(less useless). this helps for having the right scenario to enjoy the content being released with the DLC, because not every campaign is going to unfold in a way that enables a good allies-communist war.
in addition to the bookmark i could foresee pushing the end date from jan 1 1948 to jan 1 1950, adding 2 years of tech, new early cold war era form-able tags for conquered nations, a national idea chain for all the majors that unlocks once the fascism faction is knocked out(or given this games gusto for ahistorical outcomes, a more dynamic idea tree that opens after a major peace conference),1 or 2 post war game features to help make the new time period more exciting(middle eastern/commonwealth/indochina post colonialism tags and events, and something else that is war with russia related), and 1 rework of a misfunctioning feature, or inclusion of a nonexistent feature that the community is clamoring for, that affects all eras of the game. also a free patch in line with their free patches for eu4(minor free patch features included)
15-25 dollaridoos.