But what if someone comes up with a mod that makes your wifi better by breaking transmit power rules (at the expense of others). Lots of people might use it, an

But what if someone comes up with a mod that makes your wifi better by breaking transmit power rules (at the expense of others). Lots of people might use it, and then there are resulting widespread interference problems. This already exists in multiple forms. It's incredibly easy to import adapters and antennas that give you an order of magnitude more power than you're legally allowed to use. I used one of those setups in high school to run uTorrent over the AP of the McDonald's half a mile away. Regular folks don't care enough to break the rules.