On that map, Green has an AAA Factory right next to an Orange Small Airfield. All the other countries have their strats neatly packed in. Maybe switch that field's country to Green?
EDIT: Also, the GV game isn't very strong in that map yet. I'd think about placing more spawn points to enemy fields. Some maps have spawnpoints everywhere, some have too few. If you're looking for a balanced map, try making the "mainlands" have spawns going at least in a ring to allow GV fights when the going gets desperate for a side.