I see nothing inherently wrong with being a patent "troll". The idea behind patents is to provide financial incentives to innovation. A little guy with a legitimate patent may have difficulty convincing large corporations to pay a license fee. One way for such a person to reap that benefit is to sell the patent to a holding company that does the work of monetizing the patent. Or to seek settlements and avoid long legal battles that he or she may not have the resources to endure. Patent "trolls" are just the market at work, and that is normally a good thing.
The problem is, the high cost of litigation makes it a very easy system to abuse. That high cost imbues patents with a substantial value regardless of their merit. It's very easy to disagree about whether a patent applies in a particular situation, or is even valid generally, but very costly to resolve such disagreements.
Unfortunately, you can't just shift the cost burden to the trolls, because then you also have to stick the little guy with the cost of sueing a giant multinational corporation for any wrongdoing. It's hard enough as is. It may seem easy to tell the difference between those situations, but it's difficult to encode those ideas in laws that apply universally. Other solutions tend to have similar problems. This RICO thing could potentially affect future class action suits against Big Evil.
My point, I guess, is this: the real problem isn't the "trolls" but the high cost of justice. Short of eliminating patents, to attack the problem from any direction other than the cost of justice tends to turn it into the same sort of thing as pornographers and free speech. You can't easily attack patent trolls or pornographers without damaging other users of the courts or of free speech.