Loser pays

Wouldn't really work, thanks to the insane concept of a legal person. Patent/DMCA/copyright trolls could simply set up a company for each case or group of cases to limit their liability. And this isn't even abusing the system, that is the very point of the system. They're called "limited liability company" for a reason. So we'd also need to abolish at the very least the ability of legal people owning (part or whole) of other legal people. Or at least cancel the "limited liability" part for second/third/fourth/etc. level legal people.