This year, three or four KA captains have resigned. C scalers are pinning their hopes that this higher than normal attrition will see their lot improved.
I hope it does! But I doubt it.
B scalers are leaving which the company probably wants. C scalers and local pilots are not. If C scalers and locals are not leaving, the HR response I've heard is the allowance is pitched too high. Now you can refer to yourself as talent and believe all that manipulative empowerment on yammer and company magazines, but until you or your mates leave in droves, your pay won't improve.
And when a C scale F/O departs, without having the stomach for an upgrade, it isn't talent departing, it's a liabilty. C scale captains have to flock to those fantastic contracts in China being bandied about the flight deck for any significant consequence.