To suggest that the legal dept of balpa side with the management in complicated cases is quite ludicrous. The Jessica Starmer would never have started!
Any legal company that is funded by collective premiums (which is what the legal side of balpa effectively is) has to make a judgement call on each case presented. If the chances of 'victory' are not reasonable then is it wise use of resources to spend collective fees with little chance of success - probably not.
Individuals will always feel hard done by if their case is not pursued but you surely cannot expect an almost open ended fund to run till defeat.
A privately hired lawyer would be delighted keep taking the cash.