I'm waiting for one of the RMT spokespeople to make a large slip-up allowing a legal challenge to be made in the courts.
As for the railways, just plan that some weeks it will be unusable, don't book any accommodation which hasn't got free cancellation (or free date changes) so it can be cancelled when more dates come out.
Right but since nobody knows which weeks that will be or how long that will you can't plan anything around it, which is not much use to anyone. So basically you can't plan any trip at all involving it.