Sometimes you have to wonder if these airlines WANT to fly from BHX, or are just doing it because of lack of slot availability. Maybe that's the case with Air Algerie - not a huge Algerian population in the Midlands and there are no onward connections to India which passengers are likely to use, and while there may be Beijing not many will fly with it. They also terminated MAN a while back.
If Air India were happy with their position at BHX, if they were forced to move to LHR for the winter they would have done everything in their power to return the next summer. It was just to protect their 'valuable slots' at the airport - though I wonder how that thought only came about in 2008, three years after they started serving BHX.
That said, airlines like Turkmenistan and Uzbekistan seemed to only work well because passengers could use them for connections to India, and plus Uzbekistan operated to JFK via BHX in 2001 (which was then axed due to 9/11, then re-instated in March 2003).
What is the usual load for the A343 compared to the 773? I was wondering as Emirates operated that aircraft to Glasgow from June for a couple of months when their second daily service initially started - would be nice to see them replace the 77W for an A343 one day to see how it works
