I'll elaborate a bit so those, who have no idea what original "Pass the Save" is about. BTW
here is link to Mr.G 24's AAR thread.
Original
Pass the Save was UK after action report with one difference compared to other AARs. It was played one year by one player, then passed to another player in row. From 1st Sep 1939 to 30th Aug 1940 it was played by Mr.G 24, then Amona took it and played till 30th Aug 1941, after him Evans played to 30th Aug 1942, next year was played by me (till 30th Aug 1943) and last in row was Evil Capitalist, who ended in 30th Aug 1944. So far it is the end because there is no player to take it over. Also, each player wrote AARs about his game.
This one, based on Hearts of Iron 2, would be something different (although there might be another SP-style "Pass the Save" AAR). Idea is to play cooperative multiplayer game as one country (UK if we want to build on original concept, but this is still open) and then write AAR about it. So it'd be more "Share the Game" or "Share the Save", but it is still about more players playing the same country and writing AAR about it.
For this concept, two players are minimum. If we are more, unless there is some technical problem (connection speed of host or restriction to max. # of players who can share one country), it'd be only good. It can also work many ways. One possibility is to divide theaters among players, second to divide responsibilities for different aread (warfare, production, research, diplomacy, etc.). Possibly combination of these two.
This is everything so far. Once we know interest we might start making it more concrete.
AAR thread of this game