Got interviewed in US embassy, Islamabad, Pakistan on 22-January, 2013 for spouse based alien relative immigration visa.

Not sure of your question. However, if you have provided all requested information, your case will be concluded in due course. A little patience...

H-1B premium processing

I agree with my colleagues.

Completed 6years.as Green Card holder. Last years applied for US Citizenship do I need a attorney for resubmission of N 400

It is imperative that ALL information be complete and truthful in your applications. Do consult an experienced Immigration Attorney for assistance...

What is the reason behind the Backlog at the NBC? Is it because of DACA?

Probably just the volume of applications in general. No one can answer that without having "inside" information.

Is section INA 321 available to citizen parents and not just naturalized? is it not a violation of the equal protection clause.

No. No.

H4 working for No pay.

I agree with my colleagues.

More facts are needed. Do consult with an experienced Immigration Attorney for assistance in this matter.

Can my spouse and child accompany me to the U.S.?

I agree with my colleagues.

H1b visa transfer after 1 year with out working with the company is possible?

I agree with Attorney Ferrari. You should consult with your company's Immigration Attorney on this matter.my colleague.

I want to form an LLC with my EAD, but its expiring on 2 jul. EAD renewal is filed and pending. Can i still form LLC?

It is not required that you have an EAD to form an LLC. You must have the EAD to work for the LLC.