also, some aspects of the game can be achieved with edit, and by making changes to the units ‘in map’. for instance, by setting the fighter movement to 5, airbases need not be “coded” as such. players will simply have to be on the ball when it comes to keeping track of fighter movement, and not rely on the engine for keeping track of legal moves.
‘edit mode’ will be sufficient for convoy zones too.
edit should be able to handle the ‘at war’ bonuses and adding bonus units from neutrals. which neutrals will fight can be agreed upon, and edit can be used as needed.
major/minor factories can probably be handled by agreement and edit.
scrambling fighters, the need for repairing ships at a port, and built in AA defense at factories are about the only things i think preventing players from playing a full blown global-like game.