3 Greens is right - BA shorthaul never got a penny for moving pax from INV to LHR to get on to their transatlantic (or other ) long haul flights. This was used as an excuse for suppresing terms and conditions in the regions - all of which were apparently losing money (but only on paper).
A big shake up in accounting, management and associated procedures is called for. Why do short haul pilots get paid less for working harder? Even if they do fewer hours (not likely) they do more sectors, more take-offs and more landings - so should get more pay.
Once BA get rid of the bean counters and look at the big picture (outside of the comfey, open plan office) then they may see the light. Damn well hope so, anyway.
Splitting long and short haul to get a real idea of the state of play would be a good start - but is not just an excuse to recruit more managers!