The moment News Corps is charged (as seems increasingly likely) under the US's Foreign Corrupt Practices Act, I'd be willing to bet that The Sun is history, at least as an NI imprint. The sheer scale of newsroom criminal activity emerging from the Leveson Inquiry will also probably lead to the Murdochs being tied up in even more expensive and damaging Congressional inquiries for years to come.
The damage the Murdoch empire has done to journalism is immense, but even that pales compared to the damage done to British public life, which NI rags have turned into a mafiosi playground, filled with routine cash bribes to those craven enough to play ball, and sinister threats and intimidation directed at those with an ounce of dignity.