I like the idea and want to join.
I like the strategic and political approach to it as I'm more familiar with that side as opposed to full scale military games. The part where you a player researches its own background should also very enjoyable.
I think a story with multiple sides (maybe in small groups) with a briefing afterwards would be the most fun. But I can imagine that it would take a lot of time and is as such maybe not workable for you.
Don't wait to long with further detail like scenery (place) and possible sides.
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