He didn't do it when he had power, what makes you think he will be able to achieve that by being head of thug-party who will be second-fiddle most of the time.
There is no point killing a thug and make him hero so that many other thugs keep coming back to haunt the country in the name of killed thug. A person can do as much as it is possible in limited time. Nevertheless, some ignorant and blinds without any knowledge of economy, development and progress, may not see things, and certainly many jealous thugs are crying all the time about Musharraf period, still those who know economy, developments, and progress that Pakistan seen during Musharraf period, would remember that. Now it is up to Nation to see the truth and save themselves from thug politicians using name of democracy to loot, plunder and destroy the country, and if not, then they deserve to get looted by these thugs, without sympathy.
Anyhow, today NS and his party of paid crooks got reduced to regional party, with possibility that they may not be even regional party in near future. As for PPP, they also have many corrupts in their rank and file (though apart of few, most are not as mega corrupt as thugs in PMLN). Anyhow, their performance in last election, especially after murder of their leader BB, was not that spectacular as one could have expected. I think that their future is also bleak, unless they show some good performance in government.
I know that propaganda machine of thug politicians are doing all what they can to keep the reputation of their thug paymasters intact, so that they can keep making fool of innocent Pakistanis with their lies, false allegations, false promises, harassment and intimidation, to get into power and then start their dirty dance of looting, plundering, and destroying the country. One can only pray that Allah destroy all corrupts and those who support them knowingly.
For me, I pray to Allah that 'WHOEVER' held political office in Pakistan, if they are corrupts, cheaters, liars, deceivers, propagandists, looters, plunderers, etc, then they, their close family members, wife and children, friends, paid journalists who promoted them, and all who benefitted from them illegally, they all burn in hell forever, InshaAllah ... and I also pray that all who put obstacles in front of these thugs and protected interest of Pakistan, by whatever means, legal or illegal, using their pen, military positions or government offices, Allah give them reward.
Note: I am a fair person, so my dua is for 'WHOMEVER' irrespective, and that means even if Musharraf or Shaukat Aziz did corruption while holding public office, than they should also burn in hell fire. For me, any politicians while in public office, regardless of the party they belong, if they have done corruption using public office they hold, than they are cursed and should burn in hell. I hope that supporters of thugs like Nawaz, Zardari, Atezaz, Iftikhar, etc would join me in this dua, that if the leaders they support are thugs and choors, they also want these leaders to burn in hell fire forever.