I wish that fields were tied together as a "Zone" and that each zone have a large airfield (with a VH in the town). Further, I wish all of the fields associated with a "Zone" only count to the reset percentage once all fields of the zone are taken.
Note that this means there are not enough players to reset the map during the off hours, because the large fields take so much time and material to capture. This would be good for the game, because fewer people will migrate to a single country for the daily perk points.