I would like guppies to comment on which type of society they would like to live in pakistan:
Where state adopts Islam in totality and curbs the religious freedom of people in accordance with strict shariat laws as implemented in Saudi Arabia, Iran, and taliban Afghanistan..
US concept of secularism where there is freedom of religion for any individual and is recognised as basic human right. Even political parties are allowed to persue and have freedom of bringing religion in to politics. They can form political parties with religious names and religious agenda.
French concept of laicite–where politics and religion are separated. Church/Mosque are totally separated from politics. Nobody is allowed to form political parties on the basis of any religious ideology, religious name etc. Nobody in the country is allowed to persue any religious agenda in politics.
Re: State Religion, freedom of religion,or freedom from religion.
It's a loaded question, as there are only three options. By omission 1, since 2 and 3 are much too secular as neither allow religious concerns to govern (at least in part) the public sphere.
Your characterization of 2 is a bit off, too. No religion can interfere with the state, and the state has every right to restrict religious practices.
Bottom line, I'm NOT a utopian, so I could care less about the utopian visions of Islamists (who have no skills to deliver, anyway). I'm a pragmatist, and would gladly settle for an imperfect Islamic state, so long as all parties (presuming it is multi-party) agree that Islam has every right to dictate the nature of the public sphere.
The role of Islam in the state is non-negotiable, no more than the various Western values are to westerners. Everything else is (or should be) academic and fluid.