Well said, @
Leader.
I will add some here:
1)
Establishing a culture of 'live and let live' where all parties who gained enough votes are allowed power in various places. This probably the BIGGEST achievement of Zardari. Anyone who has followed Pakistani politics from 1947 onward must know how the vicious and uncompromising attitudes of politicians (and Generals-turned-politicians) has harmed Pakistan.
2) No political machinations like those of the past. Lotacracy is much less acceptable and much more despised then, say, in the 2000's.
3) A consensus based 18th Constitution Amendment which is the largest piece of legislation since the 1973 Constitution.
4) However weak a response but Zardari led PPP govt. and it's allies still stood out against the Blasphemy Law. They tried to be more pro-minorities. They also clearly stood against the Talibans and other religious extremist.
5) While Musharraf may have initiated larger participation of women in the parliament PPP has given many seats to women and allowed greater role for women in public affairs.
6) Media and Judiciary remain the free-er than ever before. Even if they can't be 'contained' in this age the govt. has not overly involved itself against these two institutions.