If the BAcc forge ahead with their current plans the whole thing will almost certainly lead to a court case challenging the very basis of seniority. The likelihood of seniority standing up to scrutiny with current UK/EU labour laws apparently tends toward zero according to recently sanctioned legal opinion. The lawyers also expressed surprise that nobody had done so to date. We can see where all this is going and it won't be good for any pilot community who's lifestyle depends heavily on the current system. The more the BA pilots try to create a leper colony for bmi pilots post integration, the more they're going to secure the end of what they currently enjoy in terms of control of lifestyle and excellent remuneration. It won't happen straight away obviously, but it won't be far off. All of the above plays into the hands of IAG management. We're on the run as a group of employees, it's better to work together than divide ourselves and all share in the obvious plans for expansion that will arise. No discriminatory seniority lists within seniority lists.
All this could be immaterial come 30th March of course!