Then you'll see people in trains trading for days long to get their 300 million and devastate everything in sight. What are you talking about?!
If I make fighters stronger against battleships, many people start to rant that battleships are too weak. That they are flying fortresses that should be invulnerable for any fighters. Next, when battleships do become stronger, everyone starts to get them, and same people start to rant that there are too many battleships on server.
So, what should I do in this situation? I guess not equip fighters with uberdevastating weapons, and not to make battleships worth half a billion. Just to keep things more or less balanced.