Just an observation but the future for bmi is not quite as you paint it. Currently bmi are looking at:
1. IAG purchase and ownership, immediate future assured, lots of potential for growth, at the expense of BA, as indicated by BA management and BACC in their rush to get BA pilots to vote.
Or
2. Integration into BA maintaining their aspirations which, presumably, are those accepted by all sides in scenario one.
BA are not saving bmi from insolvency, IAG have already entered into a binding agreement to purchase them. Assuming nothing interferes with the purchase, bmi has every possibility of an exciting future.
It would be extraordinarily difficult to prove that if integration hadn't happened one would have been better off. The future of BA if integration happens is hugely different to its future with a standalone on its doorstep. To demonstrate that one might have been "better off" without a specific method of integration, especially given the rhetoric over the alternative, is pretty much impossible.
This was even alluded to in the management Q and A sessions when Stephen Riley remarked that some might feel disadvantaged in the short term, but the longer term would see their situation improved.