I remember the former KA GMO talking about removing allowances, ie housing, schooling, to pilots who were holding
PR cards. His reasoning was that they were now ostensibly local pilots, and should not be eligible for expatriate allowances.
Ironically, this is now what has happened at cx. But without seniority.
I recon its a fair point regarding work permits. They should not be renewed in the current crisis. Local ATPL holders should be offered jobs as pilots in CX.