Some other, less expensive, less corrupt tribunal mechanism? I don't think GP is saying courts are bad because they're courts, they're saying US courts happen to be bad and expensive (which is not necessary).
How would that work legally? I’m pretty sure you can’t prevent someone from having to drag them to court with a tribunal, because the party you want to compel to do something has the right to a trial. If apple patents something you think you invented and published first, and you go to the tribunal, but apple says „no, I want a court order“, what is supposed to happen? I don’t think you can just remove the right to a trial (but I’m not a lawyer, so maybe that’s possible?).