I don't think you're following me :P
Imagine this: it takes $10 worth of weapons and ammo to take a War Level 15 C3. On the flipside, it costs $5 a month to maintain the defence index required for Game Level 15, and $5+ to purchase the weapons and ammo.
Player A goes with the War Level option to get to GL 15. He pays $10, fights a war against a C3, and moves *permanently* up to that Game Level.
Player B goes with the Game Level option. He pays $5 for the weapons and ammo and $5 to maintain them for a month so that he can move up to the next Game Level. He's now moved up to Game Level 15, but if he wishes to stay there, he has to pay $5 a month - which means, after the first month, he is paying way more than Player A.
It doesn't really matter how much the weapons cost to maintain - if the cost is above $0, Player B always ends up paying more. Now, considering that Game Levels help determine score, why does Player B have to pay through the nose for his points whilst Player A only has to beat a C3 in a war? Even if Player A is inept, it will *always* cost him less money to get to and stay at GL 15, even if he has to purchase $20 of weapons and ammo because he's so inept.
And in regards to economy players - maintaining oodles of corporations, massive indices, and huge populations is just as hard, if not harder, than Player A's route.
Where is the balance in this? The game shouldn't be trying to push every player towards War Levels because they're the only economically viable route to a higher score.