If you want justice:
1) SCO will no longer be able to argue to the Bankruptcy court that it still has a reasonable chance of success with their litigation, so they will be forced to focus their resources. They can no longer rely on plausibility of winning their IBM case, because they essentially have no case now. Not to mention, there's now a good whack of counterclaims that IBM will be drawing out of them, and they're basically entirely crippled now. The Judge gave them the option to waive their IBM suit, and if they don't take that opportunity then they risk getting sued by Novell as well, meaning they're going to be in mad mad debt even longer.
2) SCO shares are worth a nickel. That's right, 5 cents. You could probably buy a whole big-ass chunk of the company right now if you really wanted to, but who would? You have a literally bankrupt company with tons in debts, looking to accumulate a whole bunch more debts through litigation, that is currently being administered by a court-appointed trustee. So all you'd be getting is debt and zero power to fix it.
3) If SCO does decide to appeal this, then at this point it's going to start costing Boies-Schiller, the law office that accepted this bullshit case in the first place. So now THEY get a financial lesson out of all of this too - don't take pump-and-dump schemes, and don't enter into law cases without first KNOWING that your client has evidence. Personally I'd actually LIKE to see this appeal happen just so Boies-Schiller can suffer as well.
The reason this case has drawn out as long as it has is because the legal system DOES work. They gave SCO enough rope to hang themselves with, and SCO took every last inch. Rather than cut their losses when any of the billions of evident signs that they were going down - when they were ruled by a judge to not own the copyright, when they were ruled by a JURY they didn't own the copyright, when they declared bankruptcy, etc. etc. etc. All this has added up to their current state: A dead company, and all of its owners in a SERIOUS amount of debt. If they cut their losses and settled then a lot of where they are now could have been avoided. But they refused to swallow their pride. And now they have a worthless company that nobody will buy, and a product that has no resources to keep it going, and no feasible plan to crawl out. Justice has been served. So if it ties up the courts for a little bit longer, all it's going to do is drive them deeper and deeper, as well as all the people that surround it. All of the chief executives' reputations have been tarnished. It'll be a long time before anybody does business again with Darl McBride before thinking twice, thrice, or sixteen times about it.
They've lost. They're over. They have no recovery. They're dead already. This is just the final crushing fatality blow. Don't think Justice hasn't been served, it has.
The only people hurt by another appeal are the lawyers at this point, so yeah, let them. I want to see these fuckers. rot.