Remove squadrons, arenas, planes, and online interaction.
Make printable gridded versions of the arena maps and then have players draw their suggested base taking strategy on these maps. Scan and upload your version of the map to stand in poll with others. The winning map for each country is the new state of the "arena". Repeat every week, with luck the war could be won in a year or two.
The prize for winning could be a new sharpie to plot base takings with, or perhaps a decorative frame to place the winning map in.
For added fun implement map caps, where only so many people may submit maps at a time depending on the time of the day, everyone else can receive a "SERVER IS BUSY" message.