I know our name change was a contribution to the decline of our LHR route, but bmi ran it into the ground themselves - dropping their business class product and constant fiddling with timings are just two of the reasons I can remember (there were more).
Add to that the confusion of bmibaby pulling out (people thought bmi and bmibaby were one and the same so when baby went it was assumed the Heathrow flight had been pulled too).
To get to the point, BA just need to scratch the surface to see that it wasn't that long ago that bmi were effortlessly filling four A320 rotations each and every day, even turning away passengers who just turned up on the day hoping a seat was available!
Despite this, my gut feeling is we won't be one of the remaining two domestic routes. One will probably be Belfast which they're inheriting off bmi.