Since the energy system requires 10points to actually attack anyone the lowest common denominator is 10. There should be 1 Energy awarded every hour and 1 Energy to attack.
The maximum Energy capacity a player has should be increased to at least 8hours worth(people have to work, sleep, etc).
The recon points system also has a similar problem in the maximum amount to can store up is too low for people to actually sleep or go to work. Increase the maximum Recon Points to 8-12 so its actually reasonable.