How do companies appease ? How they all do, offer a pay incentives here, promises there, pull out that old nutmeg "we'll have to close the place down if you don't do this .." they can draw out any negotiating process for as long as they want to.
Why do they continue to farm out work...ask your union reps that one.
Sadly if the aircraft you receive from any base maintenance be it home or abroad is considered not airworthy, you have problems. How/why does the company rep/crew accept the aircraft from the heavy maint input?
I would certainly take my hat off to you sir, if you have to continue to work under those conditions, everyday must be a battle.