The only thing that would help stop the current slide in pay and conditions is if the present pilot group stood together and refused to let it happen.
This could be achieved quite easily IF and it's a BIG IF the Training Captains were to advise the company that they were no longer interested in doing any more training. So far as I know these guys do it by choice, yes, they are paid extra for it, but nothing says they have to do it it they don't want to do it any more.
Yep a big sacrifice possibly for these guys but a way to stop the rot.
The other way of making a point as someone suggested somewhere is for the Captains not not give any sectors to the cadets by deeming condtions unsuitable for the cadet to be PF, thus requiring regular sim trips for the cadets to remain current.