…the Zionist nation will do almost anything, including humiliate itself and free convicted murderers to get a few corpses back.

Agreed, it doesn’t seem to be a sane or productive policy. A better policy, now that the disproprotionate value placed on Israeli versus enemy soldiers is well established, would be to proceed by logical extension to kill so many (a hundred, two or three?) of the enemy for every Israeli killed or captured and refused release.