Reading comments like this really frustrates me, because it's based on complete ignorance of the civil justice system. The people clamoring for tort reform don't even appreciate how badly they're being used as pawns. Oh, tort reform is a good idea, until it's you that gets hurt. Besides, it's completely irrelevant to this discussion. A breach of contract/fraud action like this one is based in contract, not tort, so your stated concerns are off base.
Lawyer here, so let me dispel a few myths. A lawyer can't simply declare a class; it has to be approved by a court after the plaintiff demonstrating certain criteria (number of potential plaintiffs, similarity of claims, type of relief sought, etc.). Second, class certification is hardly "a common practice." In fact, it's exceedingly rare.
Third, the plaintiffs in the D* suit ARE claiming to be financially harmed. You (and others) should actually read up on the complaint before you spout off. They're claiming they agreed to costly equipment upgrades and extended contract terms based on D*'s representation that they would provide a certain level of service. Only after people agreed to those contracts did D* downgrade their HD signal. The 1920x1080 HD signal quality is expressly referenced in several receiver manuals D* marketed at the time, including the Hughes HTL-HD, which I still have. Go to D*'s website and find the manuals under the Troubleshooting menu if you don't believe me. The plaintiffs' claim that D* is not living up to its bargain warrants a trial before a jury, which is what the trial court basically said when it denied D*'s motion to dismiss the case.
So, what's the appropriate remedy if the plaintiffs end up winning? This isn't a cash grab, like you imply. Plaintiffs merely want to be made whole, whether that means forcing D* to (1) broadcast at the promised higher resolution, (2) compensate the plaintiffs for the difference in value between what they bargained for and what they actually received, or (3) eliminate any early termination fees for those affected and refund the cost of the costlier equipment without penalty. Unlike you, I have an understanding of the facts of this case and don't necessarily see any "greed" on these facts.
EDIT: Dishcomm, since you claimed above that you weren't able to find anything on D*'s website promising a specific HD resolution, I've now done the legwork for you. See the HTL-HD manual, page 10, which says that HD is either 1920x1080i or 1280x720p:
http://www.directv.com/learn/pdf/System_Manuals/Hughes/HNS_HTL-HD.pdf That's a promised resolution in my book.