The biggest treachery Musharraf did was he gave NRO to the proclaimed money launderers, looters of Pakistan, Zardari and Nawaz Sharif.
Between them they ruled Pakistan for 10 years and destroyed the economy, the exports, all the industrial sectors and only added fancy grandiose projects like IPP's and Orange Train, imported coal based plants, RLNG based power plants, fancy unused motorways, flyovers, fancy buildings.
And the biggest stab on the economy was when they came after Musharraf, Pakistan total loans were about 6000 billion Rs. and when they left after 10 year tenure Pakistan total loans surged to a huge 30,000 billion Rs.
An increase which is greater than all the loans taken at that point in time by Pakistan.