If they did that, most would leave after a couple years having the type and a couple thousand hours command under their belt and not finish the contract, and Korean Air ain't that dumb
Guess KAL administration was and is still dumb; heard from previous KAL employees of good standing in the sandpit that KAL was duped by some South African B737 skippers masquerading as B744 skippers ( with only cruise pilot time ). They are still being duped by dodgy folks from dodgy outfits trying their luck with non rated B777/744 skipper ratings. Hard to believe but I was told by good authority to be very true!