Isn't "judges making law" a key feature of common law systems? IANAL, obviously, I would know the answer to such a basic question if I were. But this is my understanding, and given that this case is in the US and the US is based on common law, I'm genuinely curious if you're advocating the US change to civil law?
Special interest groups throwing their money at suitable cases of random people to further their interests is not a key feature of common law, it's a very unfortunate side effect.