No QR at BHX
To add my two-penneth, and not a popular one I guess, the decision of QR not to open BHX is probably the best thing that could have happened at the moment.
Another carrier serving roughly the same market at Emirates and Turkish could easily have resulted in one of these two successful operations blinking first, and leaving, or contracting at BHX. As it is, the status quo is maintained.
As for Air Blue, despite the hysteria, the is no definite info as to whether this is a "permanent suspension" or a temporary one. Again, it won't do PIA's fortunes any harm. Two carriers on ISB/BHX could be overkill, and could have resulted in no carriers on ISB/BHX.
More flights and more carriers often isn't the best option. Without wishing to raise the dreaded three letters "YYZ" again, look what happened when AC muscled in on WD's territory - result no scheduled services from YYZ to BHX!