I wonder if Birmingham have ever suggested Air China using A330's. Air China previously visited BHX for a VIP visit during 2006, using a 747 also. The only concerns about this route are:
* runway length
* pax
* demand
* profitability
* fuel
Runway legnth could be an issue, but demand is likely to be the main issue. Again, MAN is more likely to get a china service due to chinese population and high student intake at the likes of Liverpool, Manchester, Leeds and Sheffield.
PIA could make their ISB-BHX flight daily
Whilst MAN has KHI/LHE flights, as well as air blue, PIA MAN-ISB is not even daily whith a huge Pakistani population in the north west.
I don't get why they didn't extend the runway years ago, if it was done, BHX would have a third terminal by now.
An extended runway doesnt neccesarily mean a third terminal. It depends if pax flow dictates the need for extra terminal space.