@Azad-Kashmiri watch your language please, you are not here to distribute certificates of other's piety and loyalty. I suggest you stick to the discussion and leave the fatwas for another time.
As for the decrease the size of the Army and keep the national citizenry as a well-trained reserve force argument, it has been tried, tested and failed multiple times in recent history and most spectacularly in the case of the JNA which adopted this as their combat doctrine. As a result, the nation fell into absolute chaos, the military training that had been imparted to the citizens became the very skill set they utilized to carry out some of the worst massacres on European soil since WWII.
In a country like Pakistan which is already at war with the radical right, attempting any such plan would be a kin to looking down your own rifle's barrel and then pulling the trigger to enjoy the fireworks.