The higher judiciary is full of political pawns recruited by the corrupt. They are all directly inducted by politicians after seeing their services as lawyers in defending their ills. Hypothetically, if a government comes which as 2/3 majority and really wants to solve the judiciary mess...
http://www.riazhaq.com/2013/06/pakistan-consensus-against-musharraf.html
Pakistani politicians, judges and media appear to be unified in their support of trying former President Musharraf for treason under article 6 of Pakistan's constitution. Unfortunately, no such consensus exists to act...