If it goes BA's way, then it could seriously damage collective action in the UK, even more so than this current dispute has.
I don't really see why, to be honest, Litebulbs. This just centres around the question of a non-contractual perk, I don't see any reason at all why it would have a wider application in terms of discrimination against strikers. There's no reason to assume it would, because that is clearly stated in legislation when it comes to contractual issues and couldn't be simply overturned by a BA win in court. It's a side issue, ultimately - which of course is part of the ludicrousness of the situation.