Is it possible to have field depletion, but also have the fields recharge at a faster rate (let's say maybe 3-4 hours from empty to full?) so that it can encourage corporate warfare, but not screw folks in other time zones completely?
Otherwise, what about making depletion dependent upon field location? Example: primary fields closest to major bases and operations offer high yields but deplete quicker, while having way more distant fields that have a less desirable drop rate (better than empty, but not as good as primary) but don't deplete at all.
