I'm gonna make my next post in BUYS tonight, and I've finally figured out how to do a Build Up Your Army 2. Rather than do a fictional World War III like the original or a World War I-themed idea to tie in with the WWI centennial, I decided to take a more direct and intriguing historical approach: The Cold War.
The Cold War was a very long and intriguing era of military history, and there's a lot of interesting weapons, vehicles, ships, and aircraft to be seen on all sides. It'd be somewhat turn-based, starting in the 1950's, then progressing to the 1960's, 1970's, 1980's, and possibly the 90's, 2000's, and 2010's. Build Up Your Army 2 would be intertwined, and as the game progresses and nations go their different ways and develop different doctrines (think skills from BUYS, but on a faction level), the outcome can diverge from history. So, it is theoretically possible that with a skilled player playing as the Soviet Union can keep the Cold War going after 1991.
As the eras progress, so do the weapons and vehicles list. At the beginning of the game in the 50's, you'll mostly see weapons used during World War II, the Korean War, and the Suez Crisis. Then in the 60's comes Vietnam-era weapons like the M16 rifle, the Patton Tank, and the Iroquois Helicopter, the 70's and 80's sees a lot of European NATO weaponry and weapons seen in the Soviet invasion of Afghanistan like the AK-74, Stinger Missile Launcher, MiG-29, and T80 Tank. If the game goes into the 90's and 2000's, you may see UAV's, Predator drones, and other advancements available for purchase.
The two definite playable armies at the launch of the game would be the United States and Soviet Union.
Other possible playable armies at the beginning could include the United Kingdom, France, Maoist China, and the two Koreas.
Later on if more people are interested, you could see the inclusion of West Germany and East Germany, Italy, Poland, Yugoslavia, Japan, Vietnam, Israel, and the Arab nations.
Guerilla groups like the Viet Cong, PLO, Mujahedeen, and Contras may possibly be included later on, if I am sure they do not cause offense. These groups are extremely controversial, but played major roles in the Cold War politics and tactics.