Thanks, Evil, for an alternate idea. A limit might work... 3, period, no matter what. And you should only be able to steal 2 maps per day. The third one should have to come from your guild rewards.

I am of the mind that the real reason hi-level players prey upon those beneath them is a function of greed. If we collect our guild benefit, it reduces how much credit we have to learn Technologies.

By stealing lower players maps instead of bringing their own, they preserve their own guild credit while hurting lower players. If this was business, it would be call antitrust. Smothering the competition by unethical means, simply because the "market" allows it.