I don't get how Hydrogen is an exploit. It takes FOREVER for those stupid generators to generate enough hydrogen to make a fuel pack. And if you put up a bunch of the generators you take FOREVER filling and emptying them. It's a micromanagement nightmare, not even worth the time. It's faster to fly to a new planet and spawn a drilling HV on a Pm deposit. I don't see why anyone would ever use this "exploit" on purpose.